Wednesday, April 02, 2008

Sheets' Fastball Velocity

I was curious where Sheet's fastball was during his first start and how it might have been affected by the rain delay. I am using what Pitch f/x (the company that provided pitch information for MLB) calls the starting velocity, which is really the velocity of the ball when it's 50 ft from homeplate. I don't know how that compares to what a radar gun typically picks up. It seems to be in the same ballpark (the ending velocity is significantly lower).

Sheets threw 62 fastballs over 6+ innings on Monday. Here are the basics:

Ave: 92.4 MPH
Max: 94.6 MPH (third pitch after rain delay)
Min: 87.5 MPH (first pitch of the game)
Median: 92.6 MPH

Here's his fastball velocity over the course of the game. The white vertical lines show the start of a new inning. The yellow line is the rain delay (click for a larger picture):

Everyone knows that it usually takes a little while for Sheets to get his velocity up and this game was no different. I wonder if that's typical for starting pitchers or just Sheets?


Anonymous JBurnson said...

Out of curiosity, how did you determine the pitch type? Did you use Pitch f/x's designation?

Also, how would the graph look if the X axis were *all* pitches (but you still plotted only the fastballs)? It'd be interesting to see if Sheets turns to the fastball later as it gets sharper.

12:13 PM  
Blogger Steve said... definitely wasn't the case with Cueto in Cincinnati's rain on Thursday....That guy was tuned in and wired up...hitting target after target between 94 and 96....And the other one Volquez pitches tomorrow...He was the more hyped pitcher...being drafted and rising up through Texas rocky road...but now it's Johnny Cueto's story....Challenging scenario to the Brewers who are so righty dominated batters...

12:16 AM  
Blogger rluzinski said...

I just used pitch F/X's pitch designations, which aren't always going to be 100% accurate.

I'll be looking at Sheets' second start soon and I'll be showing all pitches thrown (as I should have the first go around).

9:33 PM  

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