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Gil Meche’s fastball

by Harry Pavlidis
September 22, 2009

Just about every day, I find something that piques my curiosity, like this article by Marty Lurie:
Let's take a look at 25 players who have stumbled during the 2009 season and examine what their prospects are for a bounce-back season in 2010.

....never mind about the other 24—all hitters....
Gil Meche, Royals: Meche signed a big contract with Kansas City as a free agent in 2007. The right-hander, when healthy, is an innings eater type pitcher. If the Royals will assume part of his remaining contract, Meche could be traded. I think he can fill a void on a team looking for a veteran pitcher, much like Carl Pavano did this year for Cleveland and Minnesota.

Not much meat there, but Lurie did have 25 players to cover in a small space. So I figured I'd take a look at Meche's PITCHf/x data (over 7,000 pitches, dating to 2007). One thing struck me—the fastball. Okay, maybe more than one thing, but the fastball stood out the most.

Fastball speed


At first blush, everything looks just fine from year to year for Meche. The variation in spin movement is not much to make of. We're talking inches (PFX_X,PFX_Z) amongst noisy data that vary by park and by year.






year#MPHPFX_XPFX_Z
200767093.0-4.610.7
2008180993.3-3.911.5
2009110993.1-5.310.3


A picture shows a little more detail. This is fastball speed (four-seam only) by game.

image

Meche was disabled due to back spasms in July, came back in August with less velocity, and has been shelved since with shoulder issues. He did throw a bullpen recently, so he could return.

While Meche looked stronger early in the season, his velocity wasn't there at the end.

Quality of the fastball


The biggest change in 2009 appears to be the swing rate against Meche's fastball, particularly out of the zone. Hitters also are taking more strikes.






year#MPHSwingWhiffChaseWatch
200767093.00.4630.1160.3220.390
2008180993.30.4680.1600.2600.362
2009110993.10.4040.1410.2040.403


Look at the run values, and you'll see a plus pitch turn into a negative (rv100E is based on batted ball type, rv100 on hits/outs).






year#IWZnkSLGrv100rv100E
20076700.4940.487-0.442-0.396
200818090.5580.523-0.475-0.157
200911090.5280.5540.4260.580


That's a big change—.7-.9 extra runs allowed per 100 pitches, about a full run per nine innings, which is about as much as his ERA ballooned.

Assuming he gets healthy, Meche may still have problems if hitters lay off his fastball, if this survey is any indication.

Other pitches


Here are the run values for Meche's other pitches. He probably throws a slider and a cutter, with a slutter in between. I'm mashing them together.






Change#rv100rv100E
2007212-3.259-1.793
2008401-0.481-0.352
20092001.080-0.933







Curveball#rv100rv100E
2007326-0.606-0.196
20086160.035-0.008
2009412-0.613-0.190







Slutter#rv100rv100E
20072420.8391.275
2008647-0.8840.136
20094121.8360.775


His slider/slutter/cutter is no gem, and certainly has its own contributions to Meche's inflated numbers in 2009. I'll speculate that hitters are sitting on the heat and taking advantage of the slutter.

References and Resources
PITCHf/x data from MLBAM's Gameday
Pitch classifications by the author

Harry Pavlidis admits he has a baseball problem. He also writes for Beyond the Boxscore, Out of the Ivy and his own blog, Cubs f/x. Feedback, questions and comments are appreciated - harrypav@gmail.com


ecp said...

Meche has said he doesn’t throw a slider, so I think that slutter you’re referring to is just his cutter.  Perhaps it takes some slider motion.  I know it seemed to be his trouble pitch this year.

Posted 09/22  at  08:42 AM
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