High-A Single-Season Strikeouts / 9 Record Progression

Every season that raised the bar, and the leader in every season between.

The High-A single-season strikeouts / 9 record is 13.36, set by Kai-Wei Teng in 2021. It has stood for 5 years. The mark has been raised 3 times since 1993.

ERA W SO SV WHIP IP K/9 BB/9 K/BB SHO CG GS G L BB W-L%

Record Holders

4 marks since 1993

Year	Player	K/9	Stood for
2021	Kai-Wei Teng	13.36	still standing
2010	Matt Moore	12.94	11 years
1998	Rick Ankiel	12.93	12 years
1993	Joel Bennett	10.99	5 years

The earliest marks here are records only in the sense that nobody had done better yet. Season length, schedule and the rules themselves have all changed, so a figure from the 1870s is not comparable with a modern one and is not offered as though it were.

Every Season

33 seasons

Year	Leader	K/9
2026	David Shields	10.72
2025	Adam Serwinowski	11.26
2024	Felipe De La Cruz	9.85
2023	Raúl Alcantara	11.70
2022	Shane Drohan	11.58
2021	Kai-Wei Teng	13.36	new record
2019	Jeff Bain	11.34
2018	Mauricio Llovera	10.19
2017	Triston McKenzie	11.71
2016	Jordan Stephens	9.89
2015	Blake Perry	9.88
2014	Taylor Cole	11.66
2013	Andrew Barbosa	10.69
2012	Andrew Chafin	11.04
2011	Trevor May	12.37
2010	Matt Moore	12.94	new record
2009	Eammon Portice	9.89
2008	Jake Arrieta	9.56
2007	Jake McGee	11.19
2006	Franklin Morales	10.46
2005	Chuck Tiffany	10.96
2004	Rich Hill	11.20
2003	Chris Saenz	9.56
2002	Clint Nageotte	11.70
2001	Francisco Rodríguez	11.64
2000	Juan Antonio Pena	10.34
1999	Scott Sobkowiak	10.40
1998	Rick Ankiel	12.93	new record
1997	Jason Brester	10.88
1996	Kerry Wood	10.71
1995	Bartolo Colon	10.63
1994	Shigeki Noguchi	10.53
1993	Joel Bennett	10.99	new record