On January 5, the Hall of Fame class of 2011 will be announced. It appears that Bert Blyleven will finally get the call after 14 years on the ballot. Roberto Alomar is likely to receive the necessary votes as well. There will be a long list of deserving candidates left out this year. After the announcement, there will be no shortage of analysis of the snubbery. But we know for a fact that, even before the votes are tallied, one deserving candidate will not be inducted.

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The legend of Dave Duncan is well known.  Pitcher A stinks and is released by his current team.  The Cardinals sign Pitcher A and he miraculously becomes a good pitcher.  Dave Duncan’s effect on these pitchers can be seen in the groundball rates.  Another NL Central pitching coach has a similar effect on pitchers’ strikeout rates.  Every year from 2001-2008, Cubs’ pitchers led all teams in strikeouts.  In 2009 they finished tied for second.  The northside pitching staff has seen plenty of turnover throughout those years, but the one thing that hasn’t changed is Larry Rothschild.  He has been the Cub pitching coach since 2002.

So does Rothschild really have an impact on his pitchers’ strikeouts.   To find out I compiled a list of all pitchers the Cubs acquired from outside the organization between 2002 and 2010.  According to the Sabremetric Library, K/PA becomes reliable after 150 batters faced.  After limiting my list to only pitchers who faced 150 batters as a Cub, I found their K% before they joined the team and during their time with Rothschild.  Here is the list.

Pitcher          K% Before    K% After    Difference
Matt Clement       17.60%       23.20%      5.60%
Antonio Alfonseca  14.70%       17.90%      3.20%
Shawn Estes        17.90%       14.70%     -3.20%
Mike Remlinger     22.30%       24.80%      2.50%
Greg Maddux        17.20%       15.50%     -1.70%
Glendon Rusch      16.70%       17.20%      0.50%
Latroy Hawkins     14.70%       19.90%      5.20%
Kent Mercker       15.60%       22.90%      7.30%
Ryan Dempster      18.00%       21.10%      3.10%
Jerome Williams    14.70%       12.30%     -2.40%
Bob Howry          20.30%       21.00%      0.70%
Scott Eyre         17.00%       23.60%      6.60%
Ted Lilly          19.60%       20.60%      1.00%
Jason Marquis      13.90%       12.60%     -1.30%
Neal Cotts         19.90%       22.70%      2.80%
Rich Harden        23.30%       29.10%      5.80%
Aaron Heilman      20.40%       20.80%      0.40%
Kevin Gregg        20.80%       23.80%      3.00%
Tom Gorzelanny     14.80%       23.70%      8.90%
John Grabow        20.50%       15.30%     -5.20%
Carlos Silva        9.80%       17.30%      7.50%

Only 5 out of the twenty-one pitchers in the list saw their K% decrease under Rothschild.  I assume Maddux didn’t learn anything he didn’t already know.  Clement, Gorzelanny, and Silva are the big ones.  Clement’s three best years were with the Cubs, and Gorzelanny and Silva were borderline major leaguers when they arrived in Chicago.  Even though he had Kerry Wood, Mark Prior, and Carlos Zambrano during the strikeout streak, we need to give Larry Rothschild credit for his influence on the high strikeout totals.