most strikeouts per game by pitcher in a season

Karl Spooner has the most strikeouts per game pitched in a season, with 13.5 in his rookie season in 1954.

	NAME	SO/G	SO	G	SEASON	TM	W	L	W%	GS	ERA	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Karl Spooner K. Spooner	13.5	27	2	1954	BKN	2	0	1.000	2	0.00	2	2	0	18.0	7	0	0	0	6	0	0		68	0	13.50	3.00	4.50	0.00	39.7	8.8	0.72	.200	0.00	0	0.40	10	3.50	7.3
2	Elmer Myers E. Myers	12	12	1	1915	PHA	1	0	1.000	1	0.00	1	1	0	9.0	2	0	0	0	5	0	0		32	0	12.00	5.00	2.40	0.00	37.5	15.6	0.78	.133	0.00	0	1.41	48	2.00	1.5
3	Henry Porter H. Porter	11.83	71	6	1884	MIL	3	3	.500	6	3.00	6	1	0	51.0	32	17	25	1	9		0		200	6	12.53	1.59	7.89	0.18	35.5	4.5	0.80		4.41	23	1.27	11	5.65	24.1
4	Ed Cushman E. Cushman	11.75	47	4	1884	MIL	4	0	1.000	4	1.00	4	2	0	36.0	10	4	4	0	3		0		125	1	11.75	0.75	15.67	0.00	37.6	2.4	0.36		1.00	8	0.91	8	2.50	17.4
5	Lee Richmond L. Richmond	11	11	1	1879	BOS	1	0	1.000	1	2.00	1	0	0	9.0	4	2	6	0	1		0		36	1	11.00	1.00	11.00	0.00	30.6	2.8	0.56		6.00	81	0.63	25	4.00	1.8
6	Randy Johnson R. Johnson	10.63	372	35	2001	ARI	21	6	.778	34	2.49	3	2	0	249.2	181	69	74	19	71	18	1	2	994	8	13.41	2.56	5.24	0.68	37.4	7.1	1.01	.315	2.67	55	2.12	48	6.52	63.9
7	Lady Baldwin L. Baldwin	10.5	21	2	1884	MIL	1	1	.500	2	2.65	2	0	0	17.0	7	5	5	0	1		0		61	0	11.12	0.53	21.00	0.00	34.4	1.6	0.47		2.65	20	0.98	9	3.71	8.2
8	Randy Johnson R. Johnson	10.4	364	35	1999	ARI	17	9	.654	35	2.48	12	2	0	271.2	207	75	86	30	70	9	0	3	1,079	4	12.06	2.32	5.20	0.99	33.7	6.5	1.02	.292	2.85	53	2.75	59	6.86	57.2
9	The Only Nolan T. Only Nolan	10.4	52	5	1884	WIL	1	4	.200	5	2.93	5	0	0	40.0	44	13	28	1	7		0		175	13	11.70	1.58	7.43	0.23	29.7	4.0	1.27		6.30	93	1.52	56	9.90	5.5
10	Shane Bieber S. Bieber	10.17	122	12	2020	CLE	8	1	.889	12	1.63	0	0	0	77.1	46	14	15	7	21	1	0	0	297	5	14.20	2.44	5.81	0.81	41.1	7.1	0.87	.267	1.75	37	2.06	46	5.35	20.5
11	Pedro Martinez P. Martinez	10.1	313	31	1999	BOS	23	4	.852	29	2.07	5	1	0	213.1	160	49	56	9	37	9	1	1	835	6	13.20	1.56	8.46	0.38	37.5	4.4	0.92	.323	2.36	42	1.38	30	6.75	79.4
12	Shane Bieber S. Bieber	10	20	2	2024	CLE	2	0	1.000	2	0.00	0	0	0	12.0	10	0	0	0	1	0	0	0	45	0	15.00	0.75	20.00	0.00	44.4	2.2	0.92	.417	0.00	0	0.08	2	7.50	5.3
13	Alex Jones A. Jones	10	10	1	1889	PIT	1	0	1.000	1	3.00	1	0	0	9.0	7	3	5	0	1	0	0		35	0	10.00	1.00	10.00	0.00	28.6	2.9	0.89	.292	5.00	82	1.12	30	7.00	2.6
14	Randy Johnson R. Johnson	9.91	347	35	2000	ARI	19	7	.731	35	2.64	8	3	0	248.2	202	73	89	23	76	6	0	1	1,001	5	12.56	2.75	4.57	0.83	34.7	7.6	1.12	.326	3.22	56	2.53	53	7.31	61.1
15	Gerrit Cole G. Cole	9.88	326	33	2019	HOU	20	5	.800	33	2.50	0	0	0	212.1	142	59	66	29	48	3	0	0	817	4	13.82	2.03	6.79	1.23	39.9	5.9	0.89	.275	2.80	55	2.63	58	6.02	45
16	Pedro Martinez P. Martinez	9.84	305	31	1997	MON	17	8	.680	31	1.90	13	4	0	241.1	158	51	65	16	67	9	0	5	947	3	11.37	2.50	4.55	0.60	32.2	7.1	0.93	.258	2.42	45	2.38	57	5.89	49
17	Randy Johnson R. Johnson	9.8	294	30	1995	SEA	18	2	.900	30	2.48	6	3	0	214.1	159	59	65	12	65	6	0	1	866	5	12.35	2.73	4.52	0.50	33.9	7.5	1.05	.301	2.73	53	2.08	44	6.68	62
18	Pedro Martinez P. Martinez	9.79	284	29	2000	BOS	18	6	.750	29	1.74	7	4	0	217.0	128	42	44	17	32	14	0	0	817	1	11.78	1.33	8.88	0.71	34.8	3.9	0.74	.236	1.82	35	2.16	47	5.31	61.5
19	Jacob deGrom J. deGrom	9.73	146	15	2021	NYM	7	2	.778	15	1.08	1	1	0	92.0	40	11	14	6	11	1	0	0	324	0	14.28	1.08	13.27	0.59	45.1	3.4	0.55	.213	1.37	27	1.23	29	3.91	30.6
20	Randy Johnson R. Johnson	9.7	291	30	1997	SEA	20	4	.833	29	2.28	5	2	0	213.0	147	54	60	20	77	10	0	2	850	4	12.30	3.25	3.78	0.85	34.2	9.1	1.05	.281	2.54	50	2.82	62	6.21	41.3
21	Randy Johnson R. Johnson	9.68	329	34	1998	TOT	19	11	.633	34	3.28	10	6	0	244.1	203	89	102	23	86	14	0	1	1,014	7	12.12	3.17	3.83	0.85	32.4	8.5	1.18	.320	3.76	72	2.89	65	7.48	42.2
22	Chris Sale C. Sale	9.63	308	32	2017	BOS	17	8	.680	32	2.90	1	0	0	214.1	165	69	73	24	43	8	0	0	851	3	12.93	1.81	7.16	1.01	36.2	5.1	0.97	.301	3.07	63	2.45	56	6.93	45.5
23	Randy Johnson R. Johnson	9.54	334	35	2002	ARI	24	5	.828	35	2.32	8	4	0	260.0	197	67	78	26	71	13	0	1	1,035	3	11.56	2.46	4.70	0.90	32.3	6.9	1.03	.289	2.70	54	2.65	61	6.82	47
24	Nolan Ryan N. Ryan	9.41	301	32	1989	TEX	16	10	.615	32	3.20	6	2	0	239.1	162	85	96	17	98	9	0	3	988	19	11.32	3.69	3.07	0.64	30.5	9.9	1.09	.258	3.61	82	2.50	65	6.09	35.1
25	Nolan Ryan N. Ryan	9.34	383	41	1973	CAL	21	16	.568	39	2.87	26	4	1	326.0	238	104	113	18	162	7	2	2	1,355	15	10.57	4.47	2.36	0.50	28.3	12.0	1.23	.280	3.12	80	2.48	69	6.57	40.9