Gleeman: Joe Nathan has one thing left to prove

From SABR member Aaron Gleeman at Baseball Prospectus on May 24, 2016:

The last big-league pitch Joe Nathan threw was an 86 mph, 1-2 slider to Torii Hunter on Opening Day of last season. Hunter checked his swing, got rung up by umpire Joe West for a game-ending strikeout, and argued his way into a meaningless ejection (followed by several days of the usual “Joe West is the worst” headlines). Detroit beat Minnesota, Nathan got his 377th career save, and two days later he was placed on the disabled list with an elbow injury that eventually required Tommy John surgery.

It was the second Tommy John surgery and third major arm surgery of Nathan’s career and at age 41 it seemed like the end of the line for the six-time All-Star closer, with a headline-grabbing one-out save against his former team and former teammate serving as a memorable final act. Instead, he rested and rehabbed, and last week Nathan signed a major-league contract with the Cubs that includes a spot on the 60-day disabled list until he’s ready to pitch again. As of now he’s aiming for early July.

Nathan wasn’t great for the Tigers before blowing out his elbow—posting a 4.78 ERA and 55/29 K/BB ratio in 58 innings—but having closely watched his entire Twins career it’s my duty to remind everyone of how great he was for a long time in Minnesota and later in Texas. Nathan at his best was as dominant as nearly any reliever in baseball history, and Nathan was at his best a lot. For instance, here’s a list of the pitchers since 1920 with the most seasons in which they threw at least 50 innings and posted an ERA below 2.00.

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Originally published: May 24, 2016. Last Updated: May 24, 2016.