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Using Spray Charts to Examine Wrist Injuries

Last season Sky pointed out in this Fanshot that David Ortiz was not able to drive the ball due to his wrist injury. I have gone back and look at the entire year and also at Edwin Encarnacion who had a wrist injury recently to see if there was any improvement.

David Ortiz

Here is David Ortiz's (left handed hitter) hitting spray chart before the injury (2008):

2008

Star-divide

David hits well to all fields, but has most of his home runs group in right field. Now here is the spray chart for the first 2 months of 2009:

4_1_5_31_09

He was only able to get hits to left field and almost no balls were going for home runs. Now looking at the next two months, he seemed to be able to get around on the ball and drive the ball again to right field.

6_1_7_31_09

Finally a spray chart of the the last 2 months:

8_1_10_1

The distribution look more like the previous year. It seemed with David, it took a couple of months to get his wrist in position to drive the ball again.


Edwin Encarnacion

On April 28th 2009, Edwin (right handed hitter) was also put on the DL with a wrist injury. First, here is his spray chart from 2008:

Edwin2008

The majority of his hits were to center and left field with all the long balls being to left field. Now here is a look at about the first 2 months after coming of the DL:

Edmwinjulyandaugust

Edwin was still hitting some long balls to left field, but there were a couple hit to center also. The previous season, non were hit there. Here is a chart for the rest of the season:

Edwin2009sepoct

Not the same pull power to left, with some balls going to center field. Edwin in 2009 was not able to be back to his 2008 self. 

Our own Dan pointed out that wrist injuries do lead to some loss in power.  Two players in not a great sample size, but if you know a player coming back from wrist surgery, you may want to track their spray charts to see if/when they are back 100%.


Thanks to texasleaguers.com for the spray charts.

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Interesting analysis Jeff. It would be nice to have a control for comparison. A player who was out for some other reason for a similar period of time during the middle of the season. Perhaps Manny. It may be that it takes a while for any player to get back to top playing shape after a lengthy layoff and that hitting for power and pulling balls are the last skills to come back.

by pjensen on Mar 18, 2010 12:17 PM EDT reply actions  

Manny’s a bad control anyway. He hit quite well after he came back from the suspension, until he got hit on the wrist by a fastball. It seemed to really knock him out of whack (it was pretty discernable) and the rest of his season just got progressively worse.

He might be interesting to look at pre- and post-July 22nd—more to advance your argument than anything else.
.

by akbash on Mar 22, 2010 9:53 AM EDT up reply actions  

Very interesting

As a Sox fan I’ll be looking at Papi’s hit chart more intently, thanks for the info.

by brogshan on Mar 18, 2010 9:14 PM EDT reply actions  

Sort of, I had a couple of switch hitters I wanted to do, and no one yet sorts by them yet.

I think there are possiblities, but little time on my front. I am thinking of some type of Lowess look at balls hit a certain distance. Hit FX would make things much easier

- .-. ..- … – / – …. . / .—. .-. - .. . … …

by Jeff Zimmerman (TucsonRoyal) on Mar 21, 2010 1:22 PM EDT up reply actions  

You wouldn't have to do Lowess I don't think

You could do a couple of experiments. 1) Look at pull% of GB, FB and LD before and after wrist injuries. 2) Look at average flyball and LD distance before and after injuries (make sure to only look at ones that were caught cause of the gameday thing).

by vivaelpujols on Mar 21, 2010 2:56 PM EDT up reply actions  

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