• France Laux - Danny Spewak (Assigned February 1, 2025)
• Tommie Aaron - Rich Bogovich (Assigned October 2, 2025)
• Paul Abbott - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Bobby Abreu - Augusto Cárdenas  (Assigned October 22, 2018)
• Buster Adams - Len Pasculli (Assigned June 24, 2024)
• Lane Adams - Native American Ballplayers book
• Bob Addis - John S. Murphy
• Hank Aguirre - Jerry Nechal
• Butch Alberts - Michael Geiss (Assigned September 21, 2022)
• Doyle Alexander - Steven Clark (Assigned January 23, 2025)
• Bob Anderson - Steven Schmitt (Assigned June 18, 2022)
• Goat Anderson - Phil Snyder
• Cody Asche - Jeremy Gibbs
• Jake Atz - Darren Gibson (Assigned January 5, 2023)
• Frank Austin - Mark Shirk (Assigned February 14, 2023)
• Brandon Bailey - Native American Ballplayers book (Assigned August 14, 2023)
• William Baker - Larry DeFillipo (Assigned June 14, 2025)
• Paul Bako - Reid Magney
• William Barbeau - David Perrin (Assigned August 21, 2025)
• Larry Barnett - George DeMarco (Assigned May 10, 2019)
• Jim Barr - Ledra Slavik
• Randy Bass - Ron Rembert (Assigned May 5, 2023)
• Doc Bass - Adam Young
• Johnny Bassler - Evan Hanzelman (Assigned August 31, 2023)
• Josh Beckett - Jason Scheller (Assigned September 1, 2023)
• Howie Bedell - Brian Engelhardt (Assigned November 28, 2017)
• Dallas Beeler - Native American Ballplayers book (Assigned August 14, 2023)
• Gus Bell - Steve Jeremko (Assigned July 31, 2024)
• Les Bell - Paul E. Doutrich
• Jerry Benjamin - 1945 Cleveland Buckeyes book (Assigned November 7, 2023)
• C. B. Beringer - Tim Castelli (Assigned August 28, 2025)
• Nate Berkenstock - Steven Glassman (Assigned February 14, 2023)
• Neil Berry - Tom Barnett (Assigned August 19, 2025)
• Ken Berry - Brian Wood (Assigned June 28, 2018)
• Buddy Biancalana - Jake Bell (Assigned August 15, 2025)
• Dennis Biddle - Tony S. Oliver
• Oscar Bielaski - Bill Lamb (Assigned January 19, 2025)
• Doug Bird - Paul Hofmann
• Jaynne Bittner - Ryan Woodward (Assigned May 3, 2023)
• Bernard Blackwell - Margaret M. Gripshover
• Fred Blanding - Alan Florjancic (Assigned June 16, 2025)
• Bret Boone - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Don Bosch - Alan Raylesberg (Assigned January 28, 2019)
• Rick Bosetti - Michael Trzinski (Assigned May 7, 2024)
• Emmett Bowles - Native American Ballplayers book
• Phil Bradley - Keith Wood (Assigned June 9, 2025)
• Neal Brady - John L. Woods (Assigned March 23, 2024)
• Joe Bratcher - Darren Gibson
• Bill Bray - Paul Boren (Assigned March 9, 2020)
• Buttons Briggs - John S. Murphy
• George Britt - 1931 Homestead Grays (Assigned April 23, 2024)
• Hubie Brooks - Thomas J. Brown Jr.
• Tony Brottem - Ed Wehling
• Tom Brown - Dixie Tourangeau (Assigned September 4, 2024)
• Kevin Brown - TR Sullivan
• Ike Brown - Rob Neyer
• Clay Buchholz - Greg Tranter (Assigned October 7, 2025)
• Dylan Bundy - Bill Nowlin (Assigned August 15, 2025)
• Tex Burnett - 1931 Homestead Grays (Assigned April 23, 2024)
• Dick Burnett - Tim Castelli (Assigned August 29, 2025)
• Buster Burrell - Ben McLaughlin (Assigned March 4, 2022)
• Larry Burright - David Jerome (Assigned February 9, 2023)
• Dick Burrus - Timothy Peeler
• Brett Butler - Davis Hebert (Assigned October 26, 2024)
• Melky Cabrera - MIke Picariello (Assigned May 30, 2024)
• John Callahan
• John Callahan - Justin Mckinney (Assigned May 18, 2016)
• Ernie Camacho - James Forr
• Mike Cameron - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Lew Camp - Terry Bohn (Assigned March 10, 2025)
• Kid Camp - Terry Bohn (Assigned March 10, 2025)
• Tom Candiotti - Jason Scheller (Assigned September 1, 2023)
• Randy Cardinal - Wesley Seidner (Assigned December 8, 2024)
• Don Carman - Russ Walsh (Assigned April 14, 2022)
• Bill Carney - Terry Bohn (Assigned March 10, 2025)
• Frank Carpin - Cory Ritterbusch (Assigned February 1, 2023)
• Carl Cashion - Anthony Bush (Assigned June 25, 2017)
• Tony Castillo
• George Castone - Jason Silverman (Assigned January 18, 2024)
• Ron Cey - Joseph Wancho (Assigned September 19, 2025)
• Joba Chamberlain - Native American Ballplayers book
• Wes Chamberlain - Brian Williams (Assigned December 14, 2024)
• Jack Chapman - Maurice Bouchard (Assigned July 18, 2024)
• Jay Clarke - Graham Nickerson (Assigned May 6, 2025)
• Buzz Clarkson - John Fredland (Assigned September 4, 2025)
• Matt Clement - Jonas Thoms (Assigned September 4, 2025)
• Andy Cohen - Barry Shay (Assigned May 31, 2024)
• Syd Cohen - Barry Shay (Assigned May 31, 2024)
• Frederick Coleman - Margaret M. Gripshover
• Joe Collins - Tom Naylor
• Bartolo Colon - Madison McEntire (Assigned November 12, 2024)
• Merv Connors - Gregory H. Wolf
• Ron Cook - Noel Hynd (Assigned October 8, 2019)
• Bob Coulson - Edward Damer (Assigned April 26, 2024)
• Jack Crimian - Adam MacKinnon (Assigned June 1, 2022)
• Jack Cronin - John Cronin (Assigned September 3, 2025)
• Walton Cruise - Darren Gibson (Assigned April 24, 2025)
• Press Cruthers - Kurt Blumenau (Assigned July 13, 2025)
• George Cunningham - Anthony Bush
• Bill Cunningham - Timothy DeLuca (Assigned October 8, 2025)
• Steve Curry - Bill Nowlin
• Ned Cuthbert - Darren Gibson
• George Cutshaw - Bill Pearch (Assigned November 28, 2024)
• Art Daney - Native American Ballplayers book
• Ike Danning - Ken Liss
• Cliff Dapper - Chris Betsch (Assigned October 22, 2024)
• Darren Daulton - John Stefano
• Jim Davenport - Dave Wilkie (Assigned March 14, 2024)
• Ted Davidson - Heath Santo (Assigned August 6, 2025)
• Dixie Davis - Gregory H. Wolf
• Willie Davis - Thomas E. Schott (Assigned July 22, 2016)
• Hank DeBerry - Mark McGee (Assigned October 11, 2023)
• Tom Dettore - Rory Costello
• Jim Devlin - Matthew Leib (Assigned January 3, 2019)
• Dick Dietz - Jeremy Darnell
• Tim Dillard - Michael Trzinski (Assigned August 18, 2025)
• Packy Dillon - Paul Winter (Assigned November 10, 2024)
• Ken Dixon - Malcolm Allen
• Alexander Donoghue - Vincent T. Ciaramella
• Bill Doran - Brian Alcott (Assigned January 19, 2025)
• Fred Dunlap - Zac Petrillo
• Ron Dunn - Michael Trzinski (Assigned August 20, 2024)
• Ray Durham - Joseph Wancho (Assigned April 1, 2025)
• Howard Easterling - Paul White (Assigned August 14, 2024)
• Lee Elia - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Jacoby Ellsbury - Native American Ballplayers book (Assigned January 25, 2025)
• Harry Ely - Brian Engelhardt (Assigned November 28, 2017)
• Darin Erstad - Kyle Shulz (Assigned December 14, 2024)
• Nick Etten - Monty Nielsen (Assigned July 20, 2022)
• Bill Evans - 1931 Homestead Grays (Assigned April 23, 2024)
• Joe Ferguson - Joseph Wancho (Assigned June 1, 2025)
• Salty Ferguson - Matt Albertson
• Frank Fernandez - Larry DeFillipo (Assigned July 7, 2025)
• Carl Finley - Nancy Finley (Assigned August 12, 2023)
• Mike Fitzgerald
• Mike Fitzgerald
• John Fitzgerald - Bill Lamb (Assigned February 16, 2025)
• John Fitzgerald - Bill Lamb (Assigned February 6, 2025)
• Scott Fletcher - Bill Nowlin (Assigned December 7, 2024)
• John Flynn - Ray Birch (Assigned January 14, 2023)
• Hank Foiles - Joseph Wancho (Assigned July 1, 2025)
• Brook Fordyce - Michael Trzinski (Assigned May 31, 2025)
• Ryan Franklin - 2001 Seattle Mariners book (Assigned June 1, 2023)
• George Frazier - Lance Levine (Assigned June 4, 2023)
• Lou Frazier - Don Dingee (Assigned June 10, 2025)
• George Freese - Bob Webster (Assigned February 7, 2018)
• John Frill - Brian Engelhardt (Assigned November 28, 2017)
• Tito Fuentes - Tony S. Oliver (Assigned September 10, 2025)
• John Gaffney - Lauren Tuiskula (Assigned November 9, 2019)
• John Galligan - Bill Lamb (Assigned April 21, 2025)
• Peter Gammons - Gordon Edes (Assigned August 3, 2017)
• Bob Ganley
• Freddy Garcia
• Chico García - Enrique García-Villarreal (Assigned June 2, 2022)
• Cocaína García - Tony S. Oliver (Assigned October 6, 2025)
• Jim Garry - Darren Gibson (Assigned March 19, 2024)
• Ned Garvin - Gene Abercrombie (Assigned January 14, 2019)
• Norman T. Gassette - Richard Smiley (Assigned February 26, 2009)
• Mike Gazella - George Pawlush (Assigned July 30, 2022)
• Andrew Gibney - John Medkeff Jr. (Assigned June 19, 2025)
• Buddy Gilbert - Jonah Weiss (Assigned May 10, 2025)
• Bob Gilkerson - Chris Young (Assigned January 23, 2025)
• Tom Gillen - Bill Lamb (Assigned January 3, 2025)
• Charles Gipson - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Graham Godfrey - Mark Wisniewski (Assigned April 5, 2022)
• John Goldie - David Rader (Assigned May 19, 2025)
• Chile Gomez - Enrique García-Villarreal (Assigned June 2, 2022)
• Eulalia Gonzales (Assigned March 30, 2020)
• Jake Goodman - Mark Stewart (Assigned January 16, 2025)
• Danny Goodwin - Donald R. Livingston (Assigned May 27, 2025)
• Bob Gorinski - Jim McKernon (Assigned April 6, 2022)
• Joe Grace - Michael Tow
• Skinny Graham - M. Shawn Hennessy
• Peaches Graham - David Perrin (Assigned September 25, 2025)
• Lou Grasmick - Edward Veit
• Don Grate - Steve Leppert
• Adam Greenberg - Gordon Warren (Assigned June 23, 2025)
• James Greene - Steven Greenes
• Didi Gregorius - Australian baseball book (Assigned April 30, 2025)
• Frank Gregory - Jim Williams
• Bert Griffith - Greg King (Assigned June 4, 2025)
• Sam Griffith - Phil Williams (Assigned June 21, 2022)
• Jason Grilli - Len Pasculli (Assigned February 24, 2025)
• Steve Grilli - Len Pasculli (Assigned February 24, 2025)
• Ross Grimsley - Paul Hofmann (Assigned July 8, 2019)
• Ross Grimsley - Paul Hofmann (Assigned July 8, 2019)
• Greg Gross - Scott Schertzer (Assigned August 13, 2024)
• Ernest Groth - Jacob Seley (Assigned June 16, 2020)
• Eddie Guardado - Mark S. Sternman (Assigned February 4, 2025)
• Giomar Guevara - Max Effgen (Assigned September 30, 2025)
• John Halama - 2001 Seattle Mariners book (Assigned June 1, 2023)
• John Haldeman - Matthew Leib (Assigned January 3, 2019)
• Albert Hall - Chandler Vinson (Assigned April 24, 2022)
• Bill Haller - Rich Johnson (Assigned August 30, 2022)
• Josh Hamilton - Thomas J. Brown Jr.
• Atlee Hammaker - Matt Stone (Assigned August 12, 2019)
• Bill Hands - Jay Wigley (Assigned July 1, 2025)
• Carlton Hanta - Alex Blair (Assigned October 28, 2024)
• Bob Harris
• James Harris - Rich Bogovich
• Virgil Harris - Rich Bogovich
• Chicken Hawks - Craig Garretson (Assigned November 26, 2024)
• Jeff Heathcock - Adam Korengold
• Slade Heathcott - Native American Ballplayers book
• Heinie Heitmuller - Sam Pickard (Assigned July 4, 2025)
• Jeremy Hellickson - David Porter
• Steve Henderson - Tom Bowen (Assigned May 31, 2024)
• Rats Henderson - Dave Wilkie (Assigned May 15, 2025)
• Jack Hendricks - R. J. Lesch (Assigned March 9, 2020)
• Carlos Hernandez
• Rudy Hernandez
• Carlos Hernandez
• Bobby Herrera - Enrique García-Villarreal (Assigned June 2, 2022)
• Troy Herriage - Chris Hicks
• Frank Hershey - Tim Cammett (Assigned February 27, 2020)
• Joe Hesketh - Bill Nowlin
• Gus Hetling - Darren Gibson (Assigned June 10, 2025)
• Ed Heusser - Gregory H. Wolf
• Charlie High - Michael Tow
• Teddy Higuera - Lee Kluck
• Tom Hilgendorf - Andy Sturgill (Assigned January 13, 2024)
• Mike Hines - Bob LeMoine (Assigned July 13, 2024)
• Gene Hiser - Robert E. Bionaz (Assigned October 18, 2024)
• Myril Hoag - Daniel Winkler (Assigned March 27, 2019)
• Shanty Hogan - Jenna Ciccotelli (Assigned January 11, 2019)
• Marty Hogan - Hannah McCartney (Assigned September 15, 2025)
• Don Hood - Michael Tedrick
• Clay Hopper - Thomas Van Hyning (Assigned May 9, 2022)
• Bob Horner - Henry Kirn
• Joe Hornung - Bob LeMoine (Assigned February 15, 2025)
• Chris Howard - Bill Nowlin (Assigned July 16, 2023)
• Steve Howe - Preston Ackerman (Assigned August 12, 2025)
• Roy Hughes - Bill Lamb (Assigned October 16, 2025)
• Keith Hughes - Matt Albertson (Assigned February 8, 2025)
• Rick Huisman - Joe Sigler (Assigned January 2, 2020)
• Todd Hundley - Thomas J. Brown Jr. (Assigned September 8, 2024)
• Ron Hunt - Tad Myre
• Randy Hunt - Gregory H. Wolf (Assigned August 14, 2024)
• Steve Huntz - Joe Schuster (Assigned January 26, 2023)
• Jerry Hurley - Bill Lamb (Assigned August 29, 2025)
• Jeff Huson - Doug Skipper (Assigned April 1, 2013)
• Brandon Inge - John Milner
• Dane Iorg - H.R. Ryan (Assigned October 17, 2023)
• Jason Isringhausen - Peter Gerken (Assigned February 2, 2023)
• Will Jackman - Donna L. Halper (Assigned September 22, 2023)
• Gregg Jefferies - Joseph Rizza
• Garry Jestadt - Tom Blodgett (Assigned March 29, 2019)
• Don Johnson - Nate Louf (Assigned May 5, 2023)
• Lou Johnson
• Lou Johnson
• Ernie Johnson - Nate Louf (Assigned May 5, 2023)
• Johnny Jones - 1931 Homestead Grays (Assigned April 23, 2024)
• Wally Judnich - M. Shawn Hennessy (Assigned August 9, 2023)
• Kila Ka’aihue - Rory Costello (Assigned May 5, 2024)
• Harold Kaese - Gordon Edes (Assigned August 3, 2017)
• Ike Kahdot - Native American Ballplayers book
• Harry Kalas - Adam Hann (Assigned November 10, 2021)
• Ron Karkovice - Jake Bell (Assigned March 8, 2022)
• Harry Keener - Bill Lamb (Assigned July 22, 2025)
• Frank Kellert - Larry DeFillipo (Assigned April 16, 2025)
• Leon Kellman - Adam Darowski (Assigned September 25, 2024)
• Fred Ketchum - Tony Kissel
• Gene Kingsale - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Bill Kinnamon - George DeMarco (Assigned May 10, 2019)
• Willie Kirkland - Joseph Wancho (Assigned June 11, 2022)
• Ron Kittle - Joseph Wancho (Assigned August 17, 2025)
• Stan Klopp - Kevin Zimmerman (Assigned September 29, 2022)
• Brad Komminsk - Brian Bratt (Assigned August 13, 2022)
• Jim Korwan - Bill Lamb (Assigned April 3, 2025)
• Charlie Krause - Justin Mckinney (Assigned June 25, 2016)
• Tom Lampkin - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Rudy Law - Michael See (Assigned January 9, 2019)
• Jim Lawrence - Luis A. Blandón Jr. (Assigned January 12, 2025)
• Al Lawson - Will McLean (Assigned May 18, 2024)
• Luis Leal - Malcolm Allen (Assigned July 19, 2022)
• Joe Leggett - Cody Belles (Assigned May 28, 2024)
• Hank Leiber - Tom Blodgett (Assigned March 29, 2019)
• Max Leon - Scott Burks (Assigned February 6, 2019)
• Joe Lillard - John V. Haynes II (Assigned November 1, 2023)
• John Lindsey (Assigned July 12, 2023)
• Joe Linsalata - Kurt Blumenau (Assigned April 18, 2025)
• Mark Littell - H.R. Ryan (Assigned October 1, 2022)
• Greg Litton - Jeff English (Assigned January 9, 2025)
• Scott Livingstone - Rick Zucker
• Milo Lockwood - Bill Lamb (Assigned August 7, 2025)
• Kyle Lohse - Native American Ballplayers book
• Fletcher Low - Jeremy M. DeSilva
• Ray Lucas - Mark Miller
• Frank Luce - Gary A. Frownfelter (Assigned September 12, 2025)
• Jerry Lumpe - Brian Wood (Assigned June 28, 2018)
• Jerry Lynn - Richard Kane (Assigned June 18, 2014)
• Denny Lyons - David E. Boyle (Assigned December 18, 2024)
• Bill Mack - Mike Mattsey
• Eric MacKenzie - Len Pasculli (Assigned August 22, 2024)
• Joe Maddon - Michael Marsh (Assigned September 25, 2023)
• Bobby Madritsch - Native American Ballplayers book (Assigned March 28, 2024)
• Mike Mahoney - Matt Albertson
• Duster Mails - Joseph Wancho (Assigned February 28, 2025)
• Oliver Marcell - Dave Wilkie (Assigned October 25, 2022)
• Jason Marquis - Rick Zucker (Assigned May 19, 2024)
• Doc Marshall - Bill Pearch
• Al Martin - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Ramon Martinez
• Joe Marty - Joseph Wancho (Assigned October 29, 2024)
• Hideki Matsui - Zac Petrillo
• Mike Mattimore - Stephen V. Rice (Assigned August 23, 2025)
• Trevor May - H.R. Ryan (Assigned October 17, 2023)
• Paddy Mayes - Native American Ballplayers book
• Edwin Maysonet - Justin Krueger (Assigned January 8, 2025)
• Jack McAdams - Darren Gibson
• Pryor McBee - Native American Ballplayers book
• Jack McCandless - Vincent T. Ciaramella (Assigned December 8, 2024)
• Harry McCluskey - Darren Gibson (Assigned April 24, 2025)
• Tommy McCraw - Joseph Wancho (Assigned July 1, 2025)
• Danny McDevitt - Andy McCue (Assigned September 21, 2023)
• Allen McDill - Madison McEntire (Assigned October 14, 2025)
• Ben McDonald - Jake Bell (Assigned July 2, 2025)
• Jack McDowell - Jake Bell (Assigned March 15, 2023)
• Joe McIntosh - Tad Myre (Assigned July 4, 2025)
• John McLaren - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Art McLarney - Niall Adler
• Mark McLemore - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Ken McMullen - Michael See (Assigned January 9, 2019)
• James McMullin - Bill Lamb (Assigned May 6, 2025)
• Jerry McNertney - Mark Camps (Assigned June 30, 2023)
• Cass Michaels - Joseph Wancho (Assigned December 14, 2022)
• Johnny Miljus - Chris Stutler (Assigned September 13, 2022)
• Otto Miller - Noel Hynd (Assigned October 8, 2019)
• Kohly Miller - Brian Engelhardt (Assigned November 28, 2017)
• Billy Milligan - Bill Lamb (Assigned September 24, 2025)
• Charlie Mills - Matt Garvey (Assigned April 3, 2024)
• Charlie Mitchell - Bill Nowlin (Assigned August 4, 2024)
• Bob Molinaro - Andy Sturgill (Assigned February 1, 2024)
• Rick Monday - Jeff Barto
• Felipe Montemayor - Enrique García-Villarreal (Assigned May 11, 2022)
• Justin Morneau - Zac Petrillo
• Ed Morris - Gregory H. Wolf (Assigned September 29, 2017)
• Yellow Horse Morris - Matthew Jacob (Assigned November 4, 2024)
• Dustin Moseley - Madison McEntire (Assigned June 30, 2025)
• John Moses - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Bob Muncrief - Gregory H. Wolf
• Dwayne Murphy - Dan Schoenholz (Assigned February 16, 2025)
• Mike “Murph” Murphy - Jake Rinloan (Assigned July 23, 2025)
• Dave Myers - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Micheal Nakamura - Australian baseball book (Assigned April 30, 2025)
• Mike Napoli - Jason Scheller (Assigned April 12, 2024)
• Jeff Nelson - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Lloyd Nephew - Stephen V. Rice (Assigned October 6, 2025)
• Pat Neshek - Jim Force (Assigned September 17, 2025)
• Matt Nokes - Tony S. Oliver (Assigned September 8, 2025)
• Tim Nordbrook - Jonathan McGrain (Assigned May 21, 2025)
• Jack O’Connor
• Tim O’Rourke - Bill Lamb (Assigned January 24, 2025)
• Fred Odwell - Larry Dake (Assigned July 5, 2024)
• Red Oldham - Paul Sullivan (Assigned March 22, 2022)
• Darren Oliver - Giselle Stancic
• Steve Ontiveros
• Joe Orsulak - Steven Colmus (Assigned March 9, 2020)
• Jorge Orta - Kevin O’Brien
• Joe Ostrowski - Len Pasculli (Assigned July 9, 2024)
• Oscar Owens - 1931 Homestead Grays (Assigned April 23, 2024)
• Ted Page - 1931 Homestead Grays (Assigned April 23, 2024)
• Emilio Palmero - Craig Lammers (Assigned November 20, 2019)
• Jose Paniagua - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Jonathan Papelbon - Greg Tranter (Assigned October 7, 2025)
• Arthur Pappas - Karl Cicitto
• Chan Ho Park - Zac Petrillo (Assigned September 28, 2023)
• Ike Pearson - Gregory H. Wolf
• Dustin Pedroia - Ralph Caola (Assigned October 12, 2025)
• Wily Mo Pena - Charles Mathon (Assigned January 27, 2023)
• Gerald Perry - 2001 Seattle Mariners book (Assigned June 1, 2023)
• John Peters
• Ray Peters - Tony Lehman
• Fritz Peterson - Alice Andre-Clark (Assigned May 27, 2025)
• Nealy Phelps - Steven Glassman (Assigned February 14, 2023)
• Tony Phillips - Preston Salisbury (Assigned June 1, 2024)
• Ollie Pickering - Terry Bohn (Assigned July 17, 2024)
• Jess Pike - Native American Ballplayers book
• Joel Pineiro - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Ed Pipgras - Armand Peterson (Assigned March 9, 2020)
• Spottswood Poles - Thomas Kern (Assigned February 29, 2024)
• Buster Posey - Zack Casciato (Assigned April 27, 2024)
• Grover Powell - Les Masterson (Assigned January 19, 2023)
• Al Pratt - Brad Cuprik
• O’Neal Pullen - Matthew Jacob (Assigned July 23, 2025)
• Bill Pulsipher - Peter Gerken (Assigned February 2, 2023)
• John Pyecha - George Pawlush (Assigned August 16, 2024)
• Shadow Pyle - Brian Engelhardt (Assigned November 28, 2017)
• Marshall Quinton - Justin Mckinney (Assigned February 17, 2017)
• Charlie Rabe - Steve Heath (Assigned June 4, 2025)
• Doug Rau - Stephen W. Dittmore
• Johnny Rawlings - John Liepa (Assigned January 12, 2014)
• Barry Raziano - Richard Cuicchi (Assigned March 29, 2025)
• John Reccius - Tim Newby (Assigned May 15, 2024)
• Rick Reed
• Ambrose Reid - 1931 Homestead Grays (Assigned April 23, 2024)
• Bill Reidy
• Desi Relaford - Ryan Crants (Assigned March 27, 2025)
• Rick Reuschel - Tim Castelli (Assigned April 9, 2024)
• Harold Reynolds - Joseph Wancho (Assigned April 2, 2025)
• Jim Riggleman - Tim Newby (Assigned February 8, 2024)
• Ernie Riles - Michael Marsh (Assigned December 15, 2024)
• Allen Ripley - Jon Henson
• Brian Roberts - Diane MacLennan (Assigned January 2, 2025)
• Bob Robertson - Thomas Kern (Assigned September 19, 2024)
• Dave Robertson - Timothy Peeler
• Hank Robinson - Darren Gibson
• Eddy Rodriguez
• Eduardo Rodriguez - Tony S. Oliver (Assigned September 4, 2022)
• Francisco Rodriguez
• Jimmy Rollins - Andy Sturgill (Assigned January 13, 2024)
• Gary Ross - Luis A. Blandón Jr. (Assigned December 6, 2019)
• Ryan Rowland-Smith - Australian baseball book (Assigned April 30, 2025)
• Jerry Royster - Pat McCrary (Assigned June 12, 2022)
• Johnny Rucker - Rick Reiff (Assigned July 20, 2025)
• Vern Ruhle - Paul White (Assigned February 20, 2023)
• Jeff Russell - Karl Cicitto
• Buddy Ryan - Len Pasculli (Assigned January 14, 2024)
• Johnny Ryan - Bill Lamb (Assigned January 11, 2025)
• Chris Sabo - Ryan Borgemenke (Assigned September 10, 2018)
• Tim Salmon - J. Scott Shaffer (Assigned March 18, 2023)
• Jack Saltzgaver - Michael Gates
• Anthony Sanders - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Kazuhiro Sasaki - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Eiji Sawamura - Paul Hofmann (Assigned November 3, 2019)
• Pat Scanlon - Jim McKernon
• Dave Schmidt
• Pete Schneider - Gregory H. Wolf (Assigned March 9, 2017)
• Paul Schreiber
• Chuck Scrivener - Scott Burks (Assigned February 6, 2019)
• Aaron Sele - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Rip Sewell - Gregory H. Wolf (Assigned January 18, 2017)
• Jake Seymour - Vincent T. Ciaramella (Assigned August 31, 2025)
• Dan Shaughnessy - Gordon Edes (Assigned August 3, 2017)
• Tom Sheehan - T.S. Flynn (Assigned December 17, 2012)
• Dan Sheehan - Justin Mckinney (Assigned February 17, 2017)
• Willie Sheelor - Jeff Barto (Assigned December 28, 2018)
• Pat Sheridan - Nick Waddell (Assigned March 9, 2020)
• Bart Shirley - Stephen W. Dittmore
• Buck Showalter - Thomas J. Brown Jr. (Assigned October 13, 2025)
• Harry Simmons - David Simmons (Assigned December 15, 2022)
• Mike Simon - Brian Pulverenti (Assigned December 1, 2024)
• Matt Sinatro - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Orville Singer - 1931 Homestead Grays (Assigned April 23, 2024)
• John Sipin - Geoffrey Dunn (Assigned January 14, 2019)
• Grady Sizemore - David Ott (Assigned July 1, 2024)
• Tyler Skaggs - Steve Kuzmiak (Assigned May 29, 2025)
• Mike Slattery - Bill Lamb (Assigned October 13, 2025)
• George Sleeman - Martin Lacoste
• Paul Smith - Jason Silverman (Assigned January 10, 2024)
• Edgar Smith - Bob LeMoine (Assigned July 3, 2024)
• Zane Smith - Dale Voiss (Assigned August 24, 2025)
• Ford Smith - M. Shawn Hennessy (Assigned June 3, 2024)
• Charles Snyder - Justin Mckinney (Assigned February 17, 2017)
• Bill Snyder - Joe Costa (Assigned February 3, 2025)
• Mike Squires - Eric Phillips
• Mike Stanley - Lance Levine (Assigned July 6, 2024)
• Denny Stark - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Henry Stein - Justin Mckinney (Assigned May 18, 2016)
• Dernell Stenson - John Fredland
• Jim Stevens - Darren Gibson (Assigned March 19, 2024)
• Lefty Stewart - Gregory H. Wolf
• Ace Stewart - W.C. Madden (Assigned March 19, 2025)
• Joe Stewart - Bill Lamb (Assigned August 17, 2025)
• Ed Stone - Jon Rimmer (Assigned January 2, 2025)
• John Stuper - Peter M. Gordon (Assigned March 18, 2020)
• George Stutz - Brian Engelhardt (Assigned November 28, 2017)
• Tom Sullivan
• Tom Sullivan
• B. J. Surhoff - Malcolm Allen
• Frank Tanana - Gordon J. Gattie (Assigned February 7, 2018)
• Carl Taylor - Kevin Cremin
• Ben Taylor
• Ben Taylor
• Michael Taylor - Alex Weaver (Assigned March 21, 2025)
• Dan Thomas - Chuck Johnson (Assigned August 13, 2016)
• Bill Thomas - David Jerome (Assigned January 7, 2024)
• Frank Thompson - Justin Mckinney (Assigned July 24, 2023)
• Homer Thompson - Darren Gibson (Assigned June 26, 2023)
• Robby Thompson - Joseph Wancho (Assigned May 26, 2024)
• Mike Thompson - Jason Horowitz
• William Penn Thompson - Jay Hurd
• Billy Thompson - Jay Hurd (Assigned July 11, 2024)
• Sloppy Thurston - Bill Lamberty (Assigned August 8, 2002)
• Ben Tincup - Native American Ballplayers book
• Lee Tinsley - Sam Gazdziak (Assigned July 16, 2023)
• Brett Tomko - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Phil Tomney - Brian Engelhardt (Assigned November 28, 2017)
• Wyatt Toregas - Native American Ballplayers book (Assigned August 14, 2023)
• Mike Tresh - Joseph Wancho (Assigned July 1, 2025)
• Coaker Triplett - C. Paul Rogers III (Assigned June 5, 2025)
• Steve Trout - Paul Hofmann (Assigned January 25, 2020)
• Thurman Tucker - Joseph Wancho (Assigned July 1, 2025)
• George Twombly - Aidan Jackson-Evans
• Babe Twombly - Aidan Jackson-Evans
• Chase Utley - Andy Sturgill (Assigned January 13, 2024)
• Benny Valenzuela - Enrique García-Villarreal (Assigned June 2, 2022)
• Andy Van Slyke - John Fredland
• Elam Vangilder - Daniel Shirley (Assigned December 9, 2019)
• John Vann - Native American Ballplayers book
• Ramon Vazquez - 2001 Seattle Mariners book (Assigned June 1, 2023)
• Joe Verbanic - Brian Kopycinski (Assigned December 20, 2024)
• Johnny Vergez - Dan Schoenholz (Assigned February 16, 2025)
• Rube Vickers - Stephen V. Rice (Assigned July 5, 2025)
• Juan Violat - Stephen V. Rice (Assigned August 2, 2025)
• Ozzie Virgil
• Fritz Von Kolnitz - Ron Krug (Assigned May 4, 2023)
• George Walker - Justin Mckinney (Assigned January 23, 2024)
• Charley Walker - 1931 Homestead Grays (Assigned April 23, 2024)
• Joe Wallis - Carl Riechers (Assigned June 29, 2025)
• Dick Wantz - Steve Kuzmiak (Assigned April 5, 2025)
• Gary Ward - Ron Elliott (Assigned August 28, 2025)
• Tommy Warren - Native American Ballplayers book
• Greg Washburn - Ryan Van Der Karr (Assigned July 28, 2022)
• Jasper Washington - 1931 Homestead Grays (Assigned April 23, 2024)
• Charlie Weber - Bill Lamb (Assigned March 27, 2025)
• Rickie Weeks - Dale Voiss (Assigned August 14, 2025)
• Jake Weimer - Stephen V. Rice (Assigned September 28, 2025)
• Willie Wells - Eric Robinson (Assigned March 4, 2013)
• Johnny Werhas - Stephen W. Dittmore
• Jerry White - Gary Caouette (Assigned April 5, 2023)
• Larry Whiteside - Gordon Edes (Assigned August 3, 2017)
• Bill Wilkinson - Native American Ballplayers book (Assigned February 7, 2025)
• Mitch Williams - Alice Andre-Clark (Assigned September 1, 2025)
• Joe Williams - Dave Wilkie
• Lefty Williams - Vincent T. Ciaramella (Assigned February 23, 2023)
• Roy S. Williams - 1931 Homestead Grays (Assigned April 23, 2024)
• Ed Williamson - Paul Proia (Assigned August 17, 2018)
• Paul Wilson - Peter Gerken (Assigned February 2, 2023)
• Dan Wilson - Eric Vickrey (Assigned September 29, 2025)
• Bill Wilson - Robert Cole
• Jim Wohlford - H.R. Ryan (Assigned May 10, 2023)
• Barney Wolfe - Edward Damer (Assigned April 26, 2024)
• Larry Woodall - Matthew Clifford (Assigned October 23, 2013)
• Chuck Wortman - Darren Gibson (Assigned June 10, 2025)
• Jim Wright
• Jim Wright - Rob Nee
• Ernie Wright - 1945 Cleveland Buckeyes book (Assigned February 19, 2024)
• Zeke Wrigley - Bill Lamb (Assigned March 13, 2025)
• Bill Yancey - Kenny Ayres (Assigned January 5, 2023)
• Ed Yarnall - Tara Krieger
• Michael Young - TR Sullivan
• Joel Youngblood - Tom Bowen (Assigned May 31, 2024)
• Geoff Zahn - Luis A. Blandón Jr. (Assigned December 6, 2019)
• George Zettlein - David Rader (Assigned January 30, 2025)
• Jordan Zimmermann - Jim Force (Assigned April 1, 2025)
• Richie Zisk - Joseph Wancho (Assigned September 23, 2024)