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Bullpens Newsbeat

Wednesday, September 21, 2016

Baseball’s Savviest (And Crappiest!) Bullpen Managers

We’re calling the resulting metric weighted reliever management plus (wRM+), and in the style of other “plus” statistics, it’s been rescaled for ease of interpretability: 100 is average, with numbers above 100 corresponding to the percentage factor by which a manager is better than average (or worse than average, for scores below 100). For example, Joe Torre grades out as the best manager since 2000 with a score of 113, meaning his bullpen management was 13 percent better than average.

At a glance, this leaderboard passes the sniff test. Aside from interlopers such as erstwhile Braves skipper Fredi Gonzalez and former A’s manager Bob Geren, it’s a list of eight well-respected tacticians. Moreover, the first five men listed have all won Manager of the Year awards, as have seven of the top 10. While it is famously difficult to predict who will win that honor, which suggests the award might not be the most robust measure of managerial quality, it’s still good to know that our new metric isn’t coming completely out of left field.

RoyalsRetro (AG#1F) Posted: September 21, 2016 at 04:29 PM | 8 comment(s)
  Beats: bullpens, fivethirtyeight, managers

Friday, September 02, 2016

The Indians and Andrew Miller Are Reshaping How We Think About Elite Reliever Usage

Chapman didn’t enter a game before the ninth inning or stay in any game for more than three outs. Miller, meanwhile, saw action as early as the sixth. He jogged in as often in the eighth as the ninth, and he entered in the seventh most often of all. He also turned in longer outings, throwing more innings than Chapman despite appearing in three fewer games. Chapman pitched in save situations all but three times; Miller pitched in non-save situations all but three times. He’s a closer-quality pitcher abnormally unbound by saves, which frees Indians manager Terry Francona to deploy him as a more flexible stopper.

Golfing Great Mitch Cumstein Posted: September 02, 2016 at 09:40 AM | 24 comment(s)
  Beats: andrew miller, bullpens, indians, terry francona



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