FanPost

Pelfrey Has a Splitter? What Splitter?

Here is a screen shot of the pitch selection for last night's start by Mike Pelfrey.

Pelfpitches_medium

via TexasLeaguers.com

Now, I know that pitch f/x is still a baby, but I also don't see a splitter on that list. And I don't remember everything from last night's game (I blame beer and the basketball game), but I do remember very clearly that a splitter was mentioned. So which pitch is it? Here's a screen shot of the locations of the pitches.

Pelfreylocationapril26_medium

From this screenshot, I would guess it was the change that is called the splitter, since they all show up in the bottom of the strikezone. The good news is that the changeup got whiffs 13.3% of the time yesterday and 16.7% of the time this year - provided it's the same pitch we are talking about here. The bad news is that Texas Leaguers also says that the change doesn't drop half as much as his curve - 4.50 vertical inches of movement for the change, and -2.27 for the curve. Compared to his 8.81 number on the fastball, the changeup is dropping, but I guess we can forgive the pitch f/x system for not calling the pitch a splitter.

It's also worth noting that the BIS section of FanGraphs shows that Pelfrey is throwing a (new) splitter 4.8% of the time this year (at 84.7 MPH, close to the 83.2 MPH speed of the changeup), and that the splitter has already been worth 2.1 runs in linear weights. Since the speeds are close, this is another notch in favor of the changeup / splitter link.

One last screenshot - spin movement w/gravity by type for the year. You'll see that there seem to be two groups of changeups, with one dropping further than the other (or am I imagining things?). It seems like the splitter is indeed mixed in with the changeup, and that BIS is out in front of MLB pitch f/x on this one. (PS: just checked Edward Mujica's page, as he's famously added a splitter this year, and it has the same problem. Guess MLB pitch f/x doesn't like the splitter.)

Spingravitypelf10_medium

This FanPost was contributed by a member of the community and was not subject to any vetting or approval process. It does not necessarily reflect the opinions, reasoning skills, or attention to grammar and usage rules held by the editors of this site.

X
Log In Sign Up

forgot?
Log In Sign Up

Forgot password?

We'll email you a reset link.

If you signed up using a 3rd party account like Facebook or Twitter, please login with it instead.

Forgot password?

Try another email?

Almost done,

By becoming a registered user, you are also agreeing to our Terms and confirming that you have read our Privacy Policy.

Join Amazin' Avenue

You must be a member of Amazin' Avenue to participate.

We have our own Community Guidelines at Amazin' Avenue. You should read them.

Join Amazin' Avenue

You must be a member of Amazin' Avenue to participate.

We have our own Community Guidelines at Amazin' Avenue. You should read them.

Spinner.vc97ec6e

Authenticating

Great!

Choose an available username to complete sign up.

In order to provide our users with a better overall experience, we ask for more information from Facebook when using it to login so that we can learn more about our audience and provide you with the best possible experience. We do not store specific user data and the sharing of it is not required to login with Facebook.

tracking_pixel_9351_tracker