Comments on: What a Slutter Does, Has Done, and Might Do for Jake Arrieta http://wrigleyville.locals.baseballprospectus.com/2016/02/12/8116/ Just another Baseball Prospectus Local Sites site Sat, 16 Feb 2019 21:04:52 +0000 hourly 1 http://wordpress.org/?v=4.1.1 By: Ryan Davis http://wrigleyville.locals.baseballprospectus.com/2016/02/12/8116/#comment-8959 Sat, 13 Feb 2016 16:56:01 +0000 http://wrigleyville.locals.baseballprospectus.com/?p=8116#comment-8959 I don’t know an exact number, but for pitchers that average just under 27 years old, a velocity drop of over 1/2 a mph, when they’re already throwing around 93 on average, would eyebrow raising. To better explain, it’s far less concerning if a 27-year-old throws 97.5 on average and then dips to 97 than it is for one that throws 93 to dip to under 92.5.

At any rate, this was just the average. A few guys didn’t see any change, while others dropped 2 mph on the fastball or as high as 3 mph in one case. Some of the drop off was shocking, including how the performance fell off as well.

]]> By: Isaac Bennett http://wrigleyville.locals.baseballprospectus.com/2016/02/12/8116/#comment-8958 Sat, 13 Feb 2016 16:48:49 +0000 http://wrigleyville.locals.baseballprospectus.com/?p=8116#comment-8958 “as the average fastball velocity began at 93.5 mph and fell to 92.9 mph the next season. That’s a difference of 0.6 mph, which may or may not be significant, depending on the pitcher.”

Any idea what an average velocity drop across the board is for pitchers in this age range?

]]> By: Joel http://wrigleyville.locals.baseballprospectus.com/2016/02/12/8116/#comment-8957 Sat, 13 Feb 2016 16:06:00 +0000 http://wrigleyville.locals.baseballprospectus.com/?p=8116#comment-8957 Good stuff. I don’t worry he’s a one-hit wonder; that said, I do wonder about what level of regression we’re going to see here. Many seem to assume that he’s such an obsessive fitness freak that he’ll be mostly fine. I hope that’s true.

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