which pitcher has the highest k/9 in a season

Shane Bieber has the best K/9 in a season, with 14.20 per nine innings in 2020.

Interpreted as:

Which pitcher has the highest k/9 with a minimum of 1 IP per team game in a season?

	NAME	K/9	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Shane Bieber S. Bieber	14.20	2020	CLE	12	8	1	.889	12	1.63	122	0	0	0	77.1	46	14	15	7	21	1	0	0	297	5	2.44	5.81	0.81	41.1	7.1	0.87	.267	1.75	37	2.06	46	5.35	20.5
2	Gerrit Cole G. Cole	13.82	2019	HOU	33	20	5	.800	33	2.50	326	0	0	0	212.1	142	59	66	29	48	3	0	0	817	4	2.03	6.79	1.23	39.9	5.9	0.89	.275	2.80	55	2.63	58	6.02	45
3	Jacob deGrom J. deGrom	13.76	2020	NYM	12	4	2	.667	12	2.38	104	0	0	0	68.0	47	18	21	7	18	0	0	0	268	4	2.38	5.78	0.93	38.8	6.7	0.96	.288	2.78	57	2.26	52	6.22	15.9
4	Spencer Strider S. Strider	13.55	2023	ATL	32	19	5	.792	32	3.86	281	0	0	0	186.2	146	80	85	22	58	9	0	1	763	6	2.80	4.84	1.06	36.8	7.6	1.09	.316	4.10	87	2.85	66	7.04	30.3
5	Randy Johnson R. Johnson	13.41	2001	ARI	35	21	6	.778	34	2.49	372	3	2	0	249.2	181	69	74	19	71	18	1	2	994	8	2.56	5.24	0.68	37.4	7.1	1.01	.315	2.67	55	2.12	48	6.52	63.9
6	Pedro Martinez P. Martinez	13.20	1999	BOS	31	23	4	.852	29	2.07	313	5	1	0	213.1	160	49	56	9	37	9	1	1	835	6	1.56	8.46	0.38	37.5	4.4	0.92	.323	2.36	42	1.38	30	6.75	79.4
7	Jacob Misiorowski J. Misiorowski	13.17	2026	MIL	27	14	5	.737	27	1.95	236	1	1	0	161.1	88	35	43	14	41	9	0	0	616	5	2.29	5.76	0.78	38.3	6.7	0.80	.234	2.40	47	2.23	53	4.91	35.2
8	Chris Sale C. Sale	12.93	2017	BOS	32	17	8	.680	32	2.90	308	1	0	0	214.1	165	69	73	24	43	8	0	0	851	3	1.81	7.16	1.01	36.2	5.1	0.97	.301	3.07	63	2.45	56	6.93	45.5
9	Max Scherzer M. Scherzer	12.69	2019	WSH	27	11	7	.611	27	2.92	243	0	0	0	172.1	144	56	59	18	33	7	0	2	693	0	1.72	7.36	0.94	35.1	4.8	1.03	.321	3.08	66	2.44	55	7.52	38.6
10	Dylan Cease D. Cease	12.66	2026	TOR	27	10	5	.667	27	2.40	227	1	1	0	161.1	101	43	49	11	67	3	0	0	644	5	3.74	3.39	0.61	35.2	10.4	1.04	.268	2.73	58	2.47	59	5.63	30.6
11	Corbin Burnes C. Burnes	12.61	2021	MIL	28	11	5	.688	28	2.43	234	0	0	0	167.0	123	45	47	7	34	6	0	0	657	5	1.83	6.88	0.38	35.6	5.2	0.94	.309	2.53	58	1.62	38	6.63	48.9
12	Kerry Wood K. Wood	12.58	1998	CHC	26	13	6	.684	26	3.40	233	1	1	0	166.2	117	63	69	14	85	11	0	1	699	6	4.59	2.74	0.76	33.3	12.2	1.21	.289	3.73	80	3.16	73	6.32	21.9
13	Randy Johnson R. Johnson	12.56	2000	ARI	35	19	7	.731	35	2.64	347	8	3	0	248.2	202	73	89	23	76	6	0	1	1,001	5	2.75	4.57	0.83	34.7	7.6	1.12	.326	3.22	56	2.53	53	7.31	61.1
14	Henry Porter H. Porter	12.53	1884	MIL	6	3	3	.500	6	3.00	71	6	1	0	51.0	32	17	25	1	9		0		200	6	1.59	7.89	0.18	35.5	4.5	0.80		4.41	23	1.27	11	5.65	24.1
15	Jose Fernandez J. Fernandez	12.49	2016	MIA	29	16	8	.667	29	2.86	253	0	0	0	182.1	149	58	63	13	55	6	0	6	737	9	2.71	4.60	0.64	34.3	7.5	1.12	.332	3.11	72	2.29	57	7.35	35.4
16	Gerrit Cole G. Cole	12.40	2018	HOU	32	15	5	.750	32	2.88	276	1	1	0	200.1	143	64	68	19	64	7	0	0	799	9	2.88	4.31	0.85	34.5	8.0	1.03	.286	3.05	70	2.70	65	6.42	32.7
17	Randy Johnson R. Johnson	12.35	1995	SEA	30	18	2	.900	30	2.48	294	6	3	0	214.1	159	59	65	12	65	6	0	1	866	5	2.73	4.52	0.50	33.9	7.5	1.05	.301	2.73	53	2.08	44	6.68	62
18	Trevor Bauer T. Bauer	12.33	2020	CIN	11	5	4	.556	11	1.73	100	2	2	0	73.0	41	14	17	9	17	3	0	1	278	3	2.10	5.88	1.11	36.0	6.1	0.79	.215	2.10	36	2.87	61	5.05	14.1
19	Max Scherzer M. Scherzer	12.30	2020	WSH	12	5	4	.556	12	3.74	92	1	0	0	67.1	70	28	30	10	23	1	0	1	295	6	3.07	4.00	1.34	31.2	7.8	1.38	.355	4.01	83	3.45	76	9.36	8
20	Randy Johnson R. Johnson	12.30	1997	SEA	30	20	4	.833	29	2.28	291	5	2	0	213.0	147	54	60	20	77	10	0	2	850	4	3.25	3.78	0.85	34.2	9.1	1.05	.281	2.54	50	2.82	62	6.21	41.3
21	Dylan Cease D. Cease	12.28	2021	CWS	32	13	7	.650	32	3.91	226	1	1	0	165.2	139	72	77	20	68	9	0	0	708	13	3.69	3.32	1.09	31.9	9.6	1.25	.309	4.18	90	3.40	76	7.55	18.9
22	Max Scherzer M. Scherzer	12.24	2018	WSH	33	18	7	.720	33	2.53	300	2	1	0	220.2	150	62	66	23	51	12	0	4	866	4	2.08	5.88	0.94	34.6	5.9	0.91	.265	2.69	62	2.65	64	6.12	36.1
23	Justin Verlander J. Verlander	12.20	2018	HOU	34	16	9	.640	34	2.52	290	1	1	0	214.0	156	60	63	28	37	8	0	0	833	5	1.56	7.84	1.18	34.8	4.4	0.90	.272	2.65	62	2.78	67	6.56	33
24	Gavin Williams G. Williams	12.14	2026	CLE	29	13	7	.650	29	3.78	228	0	0	0	169.0	132	71	75	27	53	4	0	0	681	8	2.82	4.30	1.44	33.5	7.8	1.09	.285	3.99	91	3.49	86	7.03	11
25	Robbie Ray R. Ray	12.13	2019	ARI	33	12	8	.600	33	4.34	235	0	0	0	174.1	150	84	91	30	84	5	0	5	747	7	4.34	2.80	1.55	31.5	11.2	1.34	.305	4.70	98	4.28	99	7.74	1

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TEAM	W	L	PCT	GB
White Sox	76	72	.514
Guardians	75	74	.503	1.5
Twins	70	78	.473	6.0
Tigers	69	79	.466	7.0
Royals	66	83	.443	10.5

Schedule

DATE	MATCHUP			TIME (ET)
Sun 9/13	CLE	@	MIN	2:10 PM
Mon 9/14	CWS	@	CLE	6:40 PM
Tue 9/15	CWS	@	CLE	6:40 PM
Wed 9/16	CWS	@	CLE	1:10 PM
Fri 9/18	ATH	@	CLE	7:10 PM

Last Game

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Sat 12 Sep 2026

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K/BB Leaders

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Braves	88	61	.591
Phillies	82	67	.550	6.0
Marlins	73	76	.490	15.0
Mets	69	79	.466	18.5
Nationals	69	81	.460	19.5
NL Central	W	L	PCT	GB
Brewers - x	93	56	.624
Cubs	83	66	.557	10.0
Pirates	74	75	.497	19.0
Cardinals	73	76	.490	20.0
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Red Sox	81	68	.544	8.5
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Twins	70	78	.473	6.0
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Sat 8/29	BOS	@	NYY	6-0
Sat 8/29	PIT	@	STL	6-2
Sat 8/29	CIN	@	CHC	5-17
Sat 8/29	SEA	@	TOR	3-4
Sat 8/29	AZ	@	SFG	7-1

Schedule

DATE	MATCHUP			TIME (ET)
Sun 9/13	COL	@	DET	12:10 PM
Sun 9/13	PHI	@	ATL	1:35 PM
Sun 9/13	NYM	@	NYY	1:35 PM
Sun 9/13	LAA	@	WSH	1:35 PM
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Shane Bieber has the best K/9 in a season, with 14.20 per nine innings in 2020.

Interpreted as:

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