SABR Defensive Index rankings released through August 27, 2017
SEPTEMBER 1, 2017 — Boston right fielder Mookie Betts leads a powerhouse lineup of defenders in the AL and Colorado third baseman Nolan Arenado retains the NL's top spot in the SABR Defensive Index™ rankings for MLB games played through Sunday, August 27.
For the fifth consecutive season, the SABR Defensive Index will be used to help select the winners of the Rawlings Gold Glove Award® and Rawlings Platinum Glove Award™, presented by SABR.
The SABR Defensive Index draws on and aggregates two types of existing defensive metrics: those derived from batted ball location-based data and those collected from play-by-play accounts. The three metrics representing batted ball data include Defensive Runs Saved from Baseball Info Solutions, Ultimate Zone Rating developed by noted sabermetrician Mitchel Lichtman, and Runs Effectively Defended based on STATS Zone Rating and built by SABR Defensive Committee member Chris Dial. The two metrics included in the SDI originating from play-by-play data are Defensive Regression Analysis, created by committee member Michael Humphreys, and Total Zone Rating.
The SABR Defensive Index accounts for approximately 25 percent of the Rawlings Gold Glove Award selection process that will be added to the votes from the managers and coaches.
Betts's SDI of 20.1 is the highest in the game among all qualified defenders, ahead of Minnesota center fielder Byron Buxton (18.2). Los Angeles shortstop Andrelton Simmons (15.2), Kansas City left fielder Alex Gordon (11.8), and Los Angeles catcher Martin Maldonado (11.8) round out the top five in the AL.
Arenado's SDI of 11.3 leads all fielders in the NL, followed by Chicago right fielder Jason Heyward (10.9) and San Francisco first baseman Brandon Belt (10.7). Arizona first baseman Paul Goldschmidt (9.7) and Milwaukee catcher Manny Piña (9.1) are close behind the leaders.
The updated SDI results were released today by the Society for American Baseball Research.
The final SDI results will be released following the conclusion of the 2017 season at SABR.org. The SDI is compiled by the SABR Defensive Committee, which includes SABR President Vince Gennaro, Sean Forman of Baseball-Reference.com, Ben Jedlovec of Baseball Info Solutions, SABR Director F.X. Flinn, author and defensive metrics expert Chris Dial, and author Michael Humphreys.
Here are the top 25 players in each League, through games of August 27, 2017 (click here to view full SDI rankings by position):
The winners of 2016 Rawlings Platinum Glove Awards, presented by SABR, were Cleveland shortstop Francisco Lindor and Chicago first baseman Anthony Rizzo. Click here to learn more about the Rawlings Platinum Glove Award, presented by SABR.
The Society for American Baseball Research (SABR) is a nonprofit organization dedicated to fostering research and disseminating the history and record of baseball. Founded in 1971, SABR has more than 6,000 members worldwide and has established itself as a vibrant baseball community and a premier distributor of ground-breaking baseball information. SABR features more than 70 regional chapters and more than 30 research committees, and produces three annual publications — two editions of The Baseball Research Journal and The National Pastime — in addition to other print and e-books. SABR also hosts two annual events: the National Convention each summer and the SABR Analytics Conference in March in Phoenix. For more information about SABR, visit SABR.org.
About the Rawlings Gold Glove Award®
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This page was last updated September 1, 2017 at 10:26 am MST.