how many times has a pitcher gotten 15 or more strikeouts in a game

Walter Johnson was on the mound in 2 games when striking out 15+ batters.

Interpreted as:

How many times in the regular season has a pitcher gotten 15 or more strikeouts in a game?

	NAME	G	SO	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	Walter Johnson W. Johnson	2	30	1	0	1.000	1	0.33	1	0	0	27.1	16		3	0	4	0	1		100	3	9.88	1.32	7.50	0.00	30.0	4.0	0.73	.242	0.99	5.27
2	Rube Waddell R. Waddell	2	33	2	0	1.000	2		2	0	0	19.0	13		5	0	7	0	0		76	0	15.63	3.32	4.71	0.00	43.4	9.2	1.05	.361	2.37	6.16
3	Ed Walsh E. Walsh	2	30	1	1	.500	2		2	1	0	17.0	7		1	0	3	0	0		60	1	15.88	1.59	10.00	0.00	50.0	5.0	0.59	.259	0.53	3.71
4	Nap Rucker N. Rucker	1	16	1	0	1.000	1		1	1	0	9.0	2		0	0	3	0	0		30	0	16.00	3.00	5.33	0.00	53.3	10.0	0.56	.182	0.00	2.00
5	Jack Coombs J. Coombs	1	18	0	0		1		1	1	0	16.0	3		0	0	6	1	0		54	1	10.13	3.38	3.00	0.00	33.3	11.1	0.56	.103	0.00	1.69
6	Joe Wood J. Wood	1	15	1	0	1.000	1		1	0	0	9.0	1		1	0	3	1	0		32	0	15.00	3.00	5.00	0.00	46.9	9.4	0.44	.077	1.00	1.00
7	Jim Scott J. Scott	1	15	0	1	.000	1	0.00	1	0	0	9.0	5	0	2	0	1	0	0		33	1	15.00	1.00	15.00	0.00	45.5	3.0	0.67	.294	2.00	5.00
8	Grover Alexander G. Alexander	1	15	0	1	.000	1	1.29	1	0	0	14.0	9	2	2	0	2	0	0		54	0	9.64	1.29	7.50	0.00	27.8	3.7	0.79	.243	1.29	5.79
9	Bob Shawkey B. Shawkey	1	15	1	0	1.000	1	1.00	1	0	0	9.0	7	1	2	0	5	0	0		40	0	15.00	5.00	3.00	0.00	37.5	12.5	1.33	.350	2.00	7.00
10	Dazzy Vance D. Vance	5	77	4	0	1.000	5	2.87	4	1	0	47.0	37	15	15	0	18	0	0		190	0	14.74	3.45	4.28	0.00	40.5	9.5	1.17	.389	2.87	7.09
11	Carl Hubbell C. Hubbell	1	15	0	1	.000	1	2.25	1	0	0	12.0	9	3	3	2	2	0	0		47	0	11.25	1.50	7.50	1.50	31.9	4.3	0.92	.250	2.25	6.75
12	Dizzy Dean D. Dean	1	17	1	0	1.000	1	1.00	1	0	0	9.0	6	1	2	0	1	1	0		36	0	17.00	1.00	17.00	0.00	47.2	2.8	0.78	.353	2.00	6.00
13	Van Mungo V. Mungo	1	15	1	0	1.000	1	0.00	1	1	0	9.0	2	0	0	0	0	0	0		29	0	15.00	0.00		0.00	51.7	0.0	0.22	.143	0.00	2.00
14	Bob Feller B. Feller	4	66	3	1	.750	4	1.75	4	0	0	36.0	19	7	8	0	24	2	0		150	2	16.50	6.00	2.75	0.00	44.0	16.0	1.19	.328	2.00	4.75
15	Mickey McDermott M. McDermott	1	15	1	0	1.000	1	2.25	1	0	0	16.0	11	4	4	0	1	1	0	0	61	0	8.44	0.56	15.00	0.00	24.6	1.6	0.75	.250	2.25	6.19
16	Warren Spahn W. Spahn	2	33	1	1	.500	2	1.13	2	1	0	24.0	10	3	3	1	4	0	0	0	86	0	12.38	1.50	8.25	0.38	38.4	4.7	0.58	.188	1.13	3.75
17	Jack Harshman J. Harshman	1	16	1	0	1.000	1	2.00	1	0	0	9.0	5	2	2	0	5	0	0	1	36	0	16.00	5.00	3.20	0.00	44.4	13.9	1.11	.333	2.00	5.00
18	Karl Spooner K. Spooner	1	15	1	0	1.000	1	0.00	1	1	0	9.0	3	0	0	0	3	0	0	0	34	0	15.00	3.00	5.00	0.00	44.1	8.8	0.67	.188	0.00	3.00
19	Herb Score H. Score	2	31	2	0	1.000	2	1.00	2	0	0	18.0	7	2	2	1	11	0	0	0	70	1	15.50	5.50	2.82	0.50	44.3	15.7	1.00	.222	1.00	3.50
20	Paul Foytack P. Foytack	1	15	0	1	.000	1	5.00	1	0	0	9.0	7	5	6	2	6	0	0	0	39	0	15.00	6.00	2.50	2.00	38.5	15.4	1.44	.313	6.00	7.00
21	Dick Drott D. Drott	1	15	1	0	1.000	1	4.00	1	0	0	9.0	7	4	5	2	1	0	0	0	37	0	15.00	1.00	15.00	2.00	40.5	2.7	0.89	.263	5.00	7.00
22	Whitey Ford W. Ford	1	15	1	0	1.000	1	0.00	1	1	0	14.0	7	0	0	0	7	0	0	1	54	0	9.64	4.50	2.14	0.00	27.8	13.0	1.00	.219	0.00	4.50
23	Sandy Koufax S. Koufax	8	129	5	2	.714	8	1.96	5	0	0	82.2	51	18	21	9	33	1	0	5	331	3	14.04	3.59	3.91	0.98	39.0	10.0	1.02	.264	2.29	5.55
24	Camilo Pascual C. Pascual	2	30	2	0	1.000	2	0.50	2	1	0	18.0	8	1	1	1	4	0	0	0	67	0	15.00	2.00	7.50	0.50	44.8	6.0	0.67	.219	0.50	4.00
25	Art Mahaffey A. Mahaffey	1	17	1	0	1.000	1	0.00	1	1	0	9.0	4	0	0	0	1	0	0	0	32	0	17.00	1.00	17.00	0.00	53.1	3.1	0.56	.286	0.00	4.00