Arizona Diamondbacks Strikeouts / 9 Leaders

Career totals with the Diamondbacks and the best single seasons in club history. Records run through the 2025 season.

Diamondbacks records →

Randy Johnson holds the Diamondbacks career record with 11.47 strikeouts / 9. The single-season record is 13.41, by Randy Johnson in 2001.

Rate records use the league's own minimums: a season needs the standard 1.0 inning per team game with the club, a career 1,000+ innings pitched with the club.

All-time Diamondbacks leaders

Career totals with the club

#	Player	With the club	K/9	G
1	Randy Johnson	1999–2008	11.47	233
2	Zac Gallen	2019–2026	9.04	191
3	Merrill Kelly	2019–2026	7.89	191
4	Brandon Webb	2003–2009	7.26	199

Single-season Diamondbacks records

Best seasons in club history

#	Player	Season	K/9	G
1	Randy Johnson	2001	13.41	35
2	Randy Johnson	2000	12.56	35
3	Robbie Ray	2019	12.13	33
4	Robbie Ray	2017	12.11	28
5	Randy Johnson	1999	12.06	35
6	Randy Johnson	2002	11.56	35
7	Robbie Ray	2016	11.25	32
8	Patrick Corbin	2018	11.07	33
9	Curt Schilling	2002	10.97	36
10	Randy Johnson	2004	10.62	35
11	Curt Schilling	2003	10.39	24
12	Curt Schilling	2001	10.27	35
13	Zac Gallen	2020	10.25	12
14	Zack Greinke	2017	9.56	32
15	Merrill Kelly	2023	9.47	30
16	Zac Gallen	2023	9.43	34
17	Zac Gallen	2022	9.39	31
18	Zack Godley	2018	9.34	33
19	Max Scherzer	2009	9.19	30
20	Brandon Pfaadt	2024	9.17	32
21	Dan Haren	2009	8.75	33
22	Zack Greinke	2018	8.62	33
23	Dan Haren	2008	8.58	33
24	Brandon Webb	2003	8.57	29
25	Randy Johnson	2008	8.46	30