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Wednesday, February 13, 2013

Batters: Lefty v. Righty Count

The previous post was based on the number of at bats (AB) + Bases on Balls (BB), effectively plate appearances (PA).  This post is based on the number of players.  Data for seasons 1903 through 2012.  Clink link to view data and graphs.

Here is the range of percentages for the seasons examined, excluding switch hitters, since their data is not broken down.

        Righty    Lefty
Min 65.76% 27.00%
Max 73.00% 34.24%
Ave 69.21% 30.79%

Max for righty batters was 1943, for lefties 1925.

From the previous post based on "PA":
        Righty    Lefty

Min 58.49% 32.50%
Max 67.50% 41.51%
Ave 63.55% 36.45%

Here is the break down in recent seasons:

        Righty    Lefty
2000 70.31% 29.69%
2001 70.63% 29.37%
2002 70.09% 29.91%
2003 69.84% 30.16%
2004 69.81% 30.19%
2005 68.22% 31.78%
2006 69.57% 30.43%
2007 68.86% 31.14%
2008 68.35% 31.65%
2009 68.60% 31.40%
2010 67.58% 32.42%
2011 67.46% 32.54%
2012 66.31% 33.69%



Here is a graph, which includes switch hitters (Both).


Min 59.81% 25.24% 2.94%
Max 70.38% 32.64% 11.08%
Ave 64.38% 28.65% 6.97%

The high for switch hitters was 1997.

From the previous post based on "PA":

        Righty    Lefty    Both
Min 51.34% 27.07% 2.57%
Max 63.71% 39.47% 19.99%
Ave 57.75% 33.16% 9.09%

For recent seasons:
64.16% 27.10% 8.74%
63.88% 26.57% 9.55%
63.56% 27.12% 9.32%
63.06% 27.23% 9.72%
63.18% 27.32% 9.50%
61.76% 28.78% 9.47%
63.16% 27.63% 9.21%
62.55% 28.28% 9.16%
62.53% 28.95% 8.52%
62.40% 28.56% 9.04%
61.40% 29.45% 9.15%
61.32% 29.57% 9.11%
60.88% 30.94% 8.18%

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