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Monday, February 18, 2013

Batters throwing

See the previous post: Six degrees of separation for batters or what's unique about Rickey Henderson?  It introduces a batter's throwing as a factor is analyzing batting.  It dealt only with the 836 batters who had at least 5,000 plate appearances (PA) in a career for seasons 1903-2012 in the American League and National League.

Definitions:
Both: switch hitters
RR: bats right, throws right
RL: bats right, throws left
LR: bats left, throws right
LL: bats left, throws left
BR: bats both, throws right
BL: bats both, throws left

This post has data for all batters.  PA here is simply at bats (AB) + Bases on Balls (BB).  Here are summary percentages in two groups:

Right      Left   Both                  RR      RL       LL         LR       BR      BL
Min 51.34% 27.07% 2.57% 50.50% 0.22% 10.76% 11.67% 2.09% 0.05%
Max 63.71% 39.47% 19.99% 63.49% 1.92% 18.43% 26.16% 19.10% 1.84%
Ave 57.75% 33.16% 9.09% 56.94% 0.81% 13.95% 19.21% 8.43% 0.66%

For recent seasons here are the six categories, which include throwing:
              RR       RL        LL       LR        BR      BL
2000 54.14% 0.77% 15.63% 15.60% 13.14% 0.71%
2001 53.85% 0.53% 14.98% 16.02% 13.96% 0.65%
2002 52.85% 0.41% 14.75% 17.42% 14.06% 0.51%
2003 52.99% 0.33% 14.46% 16.28% 15.40% 0.53%
2004 52.00% 0.41% 14.75% 16.36% 15.99% 0.48%
2005 52.39% 0.69% 14.61% 16.58% 15.06% 0.66%
2006 54.99% 0.63% 13.24% 15.86% 14.27% 1.01%
2007 53.90% 0.47% 13.19% 16.83% 14.47% 1.14%
2008 52.61% 0.69% 13.43% 19.43% 12.86% 0.98%
2009 50.63% 0.72% 14.64% 17.95% 15.10% 0.96%
2010 53.34% 0.70% 15.52% 16.27% 12.92% 1.24%
2011 52.16% 0.72% 15.25% 17.62% 12.91% 1.35%
2012 51.36% 0.82% 14.89% 19.29% 12.47% 1.17%
              RR       RL        LL       LR        BR      BL

Click link to view all data and graphs; newest tabs are to the right.  Warning: Google Docs is behaving strangely.

Bats right, throws left (RL) and bats both, throws left (BL) are very thin lines at the top.  As mentioned in the previous post: "Rickey Henderson is the only righty batter who throws lefty with at least 8,000 plate appearances (PA)."  Sort of Rickey's six degrees of separation or Rickey being Rickey.  Since Rickey's claim to fame is On Base Percentage (OBP) and stolen bases, one wonders why he did not bat lefty or switch hit.  Lance Berkman is the all time best BL.

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