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Progressive Strikeouts per 9IP
Leaderboard
 
This table is a snapshot of the career, single-season, active, and yearly leaders at the end of each season.
* - Indicates Hall of Fame
Bold - Indicates active player
Year    Career K9    Single-Season K9    Active K9    Yearly K9 
2000      James Pineda 12.12      James Pineda 12.12 
2001      James Pineda 12.12      Eric Song 11.85 
2002      James Pineda 12.12      Eric Song 11.80 
2003    Samson Steele * 7.42    Steven Williams * 14.12    Samson Steele * 7.42    Steven Williams * 14.12 
2004    Joseph Seybert 10.94    Steven Williams * 15.05    Joseph Seybert 10.94    Steven Williams * 15.05 
2005    Eric Song 12.04    Steven Williams * 15.05    Eric Song 12.04    Steven Williams * 13.84 
2006    Steven Williams * 13.15    Steven Williams * 15.05    Steven Williams * 13.15    Steven Williams * 12.29 
2007    Steven Williams * 13.11    Steven Williams * 15.05    Steven Williams * 13.11    Steven Williams * 12.90 
2008    Steven Williams * 12.97    Steven Williams * 15.05    Steven Williams * 12.97    Steven Williams * 12.23 
2009    Steven Williams * 12.60    Steven Williams * 15.05    Steven Williams * 12.60    Jose Langlois 10.55 
2010    Steven Williams * 12.04    Steven Williams * 15.05    Steven Williams * 12.04    James Yim * 8.58 
2011    Steven Williams * 11.70    Steven Williams * 15.05    Steven Williams * 11.70    Edgardo Castillo * 9.11 
2012    Steven Williams * 11.49    Steven Williams * 15.05    Steven Williams * 11.49    David Echegaray 9.96 
2013    Steven Williams * 11.33    Steven Williams * 15.05    Steven Williams * 11.33    David Echegaray 9.92 
2014    Steven Williams * 11.20    Steven Williams * 15.05    Steven Williams * 11.20    David Echegaray 9.87 
2015    Steven Williams * 11.00    Steven Williams * 15.05    Steven Williams * 11.00    Jose Langlois 10.10 
2016    Steven Williams * 10.94    Steven Williams * 15.05    Steven Williams * 10.94    Jose Langlois 10.65 
2017    Steven Williams * 10.84    Steven Williams * 15.05    Steven Williams * 10.84    Jose Langlois 10.33 
2018    Steven Williams * 10.84    Steven Williams * 15.05    Jose Langlois 9.72    David Echegaray 10.00 
2019    Steven Williams * 10.84    Steven Williams * 15.05    James Yim * 9.71    David Echegaray 9.95 
2020    Steven Williams * 10.84    Steven Williams * 15.05    David Echegaray 9.67    David Echegaray 9.94 
2021    Steven Williams * 10.84    Steven Williams * 15.05    David Echegaray 9.65    David Echegaray 9.38 
2022    Steven Williams * 10.84    Steven Williams * 15.05    David Echegaray 9.59    William Tinoco 8.71 
2023    Steven Williams * 10.84    Steven Williams * 15.05    David Echegaray 9.52    William Tinoco 8.97 
2024    Steven Williams * 10.84    Steven Williams * 15.05    David Echegaray 9.47    Panic Mesick 8.47 
2025    Steven Williams * 10.84    Steven Williams * 15.05    David Echegaray 9.38    Stanford Heinz 10.46 
2026    Steven Williams * 10.84    Steven Williams * 15.05    David Echegaray 9.36    Kevin Smith 8.36 
2027    Steven Williams * 10.84    Steven Williams * 15.05    William Tinoco 8.20    Stanford Heinz 10.42 
2028    Steven Williams * 10.84    Steven Williams * 15.05    William Tinoco 8.14    Cougar Koon 8.46 
2029    Steven Williams * 10.84    Steven Williams * 15.05    Asdrubal Cifonte 8.17    Stanford Heinz 9.64 
 
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