most strikeouts by a pitcher before the all star break in one season all-time

Nolan Ryan has fanned the most hitters in a season before the All-Star Game, with 234 strikeouts in 1977.

	NAME	SO	SEASON	TM	G	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	H/9
1	Nolan Ryan N. Ryan	234	1977	CAL	23	13	8	.619	23	2.64	16	4	0	190.2	121	56	66	8	133	6	0	4	808	14	11.05	6.28	1.76	0.38	29.0	16.5	1.33	.265	3.12	5.71
2	Nolan Ryan N. Ryan	233	1973	CAL	25	11	12	.478	24	2.84	16	3	1	199.1	143	63	68	13	100	5	1	1	825	8	10.52	4.52	2.33	0.59	28.2	12.1	1.22	.274	3.07	6.46
3	Randy Johnson R. Johnson	211	1999	ARI	20	9	7	.563	20	2.95	7	1	0	152.2	116	50	56	17	44	5	0	2	607	3	12.44	2.59	4.80	1.00	34.8	7.2	1.05	.300	3.30	6.84
4	Randy Johnson R. Johnson	202	2001	ARI	19	11	5	.688	19	2.71	2	1	0	132.2	98	40	43	13	42	10	0	0	533	6	13.70	2.85	4.81	0.88	37.9	7.9	1.06	.320	2.92	6.65
5	Sandy Koufax S. Koufax	202	1962	LAD	22	13	4	.765	21	2.15	11	2	1	167.2	118	40	49	9	46	2	1	4	666	3	10.84	2.47	4.39	0.48	30.3	6.9	0.98	.268	2.63	6.33
6	Nolan Ryan N. Ryan	201	1974	CAL	25	12	9	.571	25	3.48	12	2	0	191.1	142	74	88	12	125	6	0	2	818	4	9.45	5.88	1.61	0.56	24.6	15.3	1.40	.274	4.14	6.68
7	Steve Carlton S. Carlton	201	1972	PHI	24	14	6	.700	24	2.48	15	4	0	196.1	148	54	57	12	53	1	0	5	774	4	9.21	2.43	3.79	0.55	26.0	6.8	1.02	.268	2.61	6.78
8	Randy Johnson R. Johnson	198	2000	ARI	19	14	2	.875	19	1.80	5	2	0	144.2	97	29	34	13	36	4	0	1	551	2	12.32	2.24	5.50	0.81	35.9	6.5	0.92	.280	2.12	6.03
9	Sandy Koufax S. Koufax	195	1965	LAD	21	15	3	.833	21	2.13	14	2	0	169.0	124	40	51	14	34	4	0	0	670	5	10.38	1.81	5.74	0.75	29.1	5.1	0.93	.260	2.72	6.60
10	Bob Feller B. Feller	190	1946	CLE	20	15	5	.750	20	1.90	19	6	0	180.0	140	38	39	7	65	1	0		730	2	9.50	3.25	2.92	0.35	26.0	8.9	1.14	.285	1.95	7.00
11	Chris Sale C. Sale	188	2018	BOS	20	10	4	.714	20	2.23	0	0	0	129.0	85	32	34	10	31	9	0	0	505	3	13.12	2.16	6.06	0.70	37.2	6.1	0.90	.281	2.37	5.93
12	Vida Blue V. Blue	188	1971	OAK	22	17	3	.850	22	1.42	17	6	0	184.1	115	29	33	6	55	2	0	1	704	9	9.18	2.69	3.42	0.29	26.7	7.8	0.92	.241	1.61	5.61
13	Curt Schilling C. Schilling	186	2002	ARI	19	14	3	.824	19	3.08	3	1	0	140.1	108	48	48	17	13	2	0	0	539	5	11.93	0.83	14.31	1.09	34.5	2.4	0.86	.283	3.08	6.93
14	Roger Clemens R. Clemens	186	1988	BOS	20	12	5	.706	20	2.42	8	6	0	159.2	122	43	49	9	28	4	0	0	625	1	10.48	1.58	6.64	0.51	29.8	4.5	0.94	.284	2.76	6.88
15	Pedro Martinez P. Martinez	184	1999	BOS	18	15	3	.833	18	2.10	3	0	0	132.2	104	31	33	5	24	4	0	1	522	4	12.48	1.63	7.67	0.34	35.2	4.6	0.96	.325	2.24	7.06
16	Sam McDowell S. McDowell	183	1970	CLE	22	13	4	.765	22	2.63	12	1	0	178.0	131	52	55	13	70	4	1	3	719	7	9.25	3.54	2.61	0.66	25.5	9.7	1.13	.263	2.78	6.62
17	Max Scherzer M. Scherzer	182	2018	WSH	20	12	5	.706	20	2.41	1	1	0	134.2	87	36	39	15	34	7	0	3	527	4	12.16	2.27	5.35	1.00	34.5	6.5	0.90	.249	2.61	5.81
18	Max Scherzer M. Scherzer	181	2019	WSH	19	9	5	.643	19	2.30	0	0	0	129.1	104	33	36	9	23	7	0	2	515	0	12.60	1.60	7.87	0.63	35.1	4.5	0.98	.322	2.51	7.24
19	Curt Schilling C. Schilling	180	1998	PHI	19	8	8	.500	19	2.92	7	1	0	145.0	122	47	50	11	34	1	0	1	585	5	11.17	2.11	5.29	0.68	30.8	5.8	1.08	.309	3.10	7.57
20	Chris Sale C. Sale	178	2017	BOS	18	11	4	.733	18	2.75	1	0	0	127.2	93	39	42	11	22	4	0	0	496	1	12.55	1.55	8.09	0.78	35.9	4.4	0.90	.292	2.96	6.56
21	Tom Seaver T. Seaver	178	1970	NYM	21	14	5	.737	20	2.40	14	2	0	172.1	118	46	48	14	44	1	1	4	669	2	9.30	2.30	4.05	0.73	26.6	6.6	0.94	.241	2.51	6.16
22	Gerrit Cole G. Cole	177	2018	HOU	20	10	2	.833	20	2.52	1	1	0	128.1	81	36	39	14	45	5	0	0	503	6	12.41	3.16	3.93	0.98	35.2	8.9	0.98	.256	2.74	5.68
23	Trevor Bauer T. Bauer	175	2018	CLE	20	8	6	.571	20	2.24	0	0	0	136.1	105	34	42	6	42	7	0	2	557	11	11.55	2.77	4.17	0.40	31.4	7.5	1.08	.303	2.77	6.93
24	Max Scherzer M. Scherzer	173	2017	WSH	18	10	5	.667	18	2.10	2	0	0	128.1	73	30	36	13	27	9	0	0	487	4	12.13	1.89	6.41	0.91	35.5	5.5	0.78	.226	2.52	5.12
25	Justin Verlander J. Verlander	172	2018	HOU	21	9	5	.643	21	2.29	1	1	0	137.2	91	35	38	16	24	7	0	0	530	2	11.24	1.57	7.17	1.05	32.5	4.5	0.84	.241	2.48	5.95