Best Starting Pitcher of the Chinese Professional Baseball League in 2009

Authors: Chih-Cheng Chen, Meng-Lung Lin, Yung-Tan Lee, Tien-Tze Chen, Ching-Yu Tseng

Abstract:

Baseball is unique among other sports in Taiwan. Baseball has become a “symbol of the Taiwanese spirit and Taiwan-s national sport". Taiwan-s first professional sports league, the Chinese Professional Baseball League (CPBL), was established in 1989. Starters pitch many more innings over the course of a season and for a century teams have made all their best pitchers starters. In this study, we attempt to determine the on-field performance these pitchers and which won the most CPBL games in 2009. We utilize the discriminate analysis approach to solve the problem, examining winning pitchers and their statistics, to reliably find the best starting pitcher. The data employed in this paper include innings pitched (IP), earned runs allowed (ERA) and walks plus hits per inning pitched (WPHIP) provided by the official website of the CPBL. The results show that Aaron Rakers was the best starting pitcher of the CPBL. The top 10 CPBL starting pitchers won 14 games to 8 games in the 2009 season. Though Fisher Discriminant Analysis, predicted to top 10 CPBL starting pitchers probably won 20 games to 9 games, more 1 game to 7 games in actually counts in 2009 season.

Keywords: Chinese Professional Baseball League, startingpitcher, Fisher's Discriminate analysis

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1057327

References:

[1] A.D. Morris, "Baseball, History, the Local and Global in Taiwan", in The minor arts of daily life: popular culture in Taiwan, David K. Jordan, A.D.M., Marc L. Moskowitz. Hawaii: University of Hawaii, 2004, pp. 175-203.
[2] http://www.cpbl.com.tw/html/english/cpbl.asp
[3] M. Lewis, Moneyball: The Art of Winning an Unfair Game. New York: Norton, 2003
[4] R.L. Sparks, and D.L. Abrahamson, "A Mathematical Model to Predict Award Winners", Math Horizons, vol. April, pp. 5-13, 2005.
[5] C.C. Chen, and T.T. Chen, "Starting Pitchers' Pitch Skills Positioning of CPBL in 2008-Multidimentional Scaling Analysis", Journal of Physical Education Fu Jen Catholic University, vol. 8, pp. 109-125, 2009.
[6] Y.-C. Kao, and C. Liu, "Comparison to Pitching Performance of Chien-Ming Wang in 2005 and 2006 Season of Major League Baseball", Sports Coaching Science, vol. 9, pp. 187-196, 2007.
[7] C. Liu, "Effects of Isokinetic Force and throwing-arm Velocity on Throwing Performance during Pitching Different Weighted Baseballs", Physical Education Journal, vol. 42, pp. 1-16, 2009.
[8] J.C. Bardbury, "Does the Baseball Labor Market Properly Value Pitchers?", Journal of Sports Economics, vol. 8, pp. 616-632, 2007.