Nolan Ryan is the oldest in a game with 10+ strikeouts. He was 45 years and 188 days old versus the Oakland Athletics on August 6, 1992.

Interpreted as:

oldest pitcher to record 10 or more strikouts in a regular-season game

	NAME	AGE	SO	DATE	TM		OPP	DEC	GS	ERA	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Nolan Ryan N. Ryan	45-188	12	8/6/1992	TEX	vs	OAK	L	1	2.35	0	0	0	7.2	6	2	2	0	3	1	0	0	33	0
2	Nolan Ryan N. Ryan	45-155	13	7/4/1992	TEX	vs	NYY	W	1	1.00	1	0	0	9.0	3	1	1	1	1	1	0	0	33	0
3	Randy Johnson R. Johnson	44-347	13	8/22/2008	ARI	vs	FLA		1	1.29	0	0	0	7.0	5	1	3	0	3	0	0	1	30	0
4	Randy Johnson R. Johnson	44-300	10	7/6/2008	ARI	vs	SDP	W	1	1.42	0	0	0	6.1	3	1	1	1	0	1	0	0	23	0
5	Randy Johnson R. Johnson	44-257	10	5/24/2008	ARI	@	ATL		1	1.50	0	0	0	6.0	5	1	1	0	0	0	0	0	23	0
6	Nolan Ryan N. Ryan	44-248	10	10/6/1991	TEX	vs	OAK		1	2.57	0	0	0	7.0	3	2	2	0	5	0	0	0	29	0
7	Nolan Ryan N. Ryan	44-178	10	7/28/1991	TEX	vs	DET	W	1	3.38	0	0	0	5.1	2	2	2	2	3	0	0	0	21	0
8	Nolan Ryan N. Ryan	44-157	14	7/7/1991	TEX	vs	CAL	W	1	0.00	0	0	0	8.1	2	0	0	0	1	0	0	0	26	0
9	Nolan Ryan N. Ryan	44-131	10	6/11/1991	TEX	vs	CWS	W	1	0.00	1	1	0	9.0	6	0	0	0	1	1	0	0	34	0
10	Nolan Ryan N. Ryan	44-090	16	5/1/1991	TEX	vs	TOR	W	1	0.00	1	1	0	9.0	0	0	0	0	2	0	0	0	29	0
11	Nolan Ryan N. Ryan	44-079	10	4/20/1991	TEX	@	BAL	W	1	0.00	0	0	0	7.1	4	0	0	0	2	0	0	0	28	1
12	Randy Johnson R. Johnson	43-252	10	5/20/2007	ARI	@	PIT	W	1	3.18	0	0	0	5.2	7	2	2	0	0	0	0	0	24	0
13	Gaylord Perry G. Perry	43-243	11	5/16/1982	SEA	vs	BAL	L	1	4.82	0	0	0	9.1	8	5	5	2	5	0	0	0	41	1
14	Nolan Ryan N. Ryan	43-242	11	9/30/1990	TEX	vs	OAK	L	1	2.45	0	0	0	7.1	3	2	2	0	4	1	0	0	30	0
15	Nolan Ryan N. Ryan	43-236	11	9/24/1990	TEX	vs	CAL	L	1	3.00	1	0	0	9.0	4	3	3	1	2	0	0	0	33	0
16	Nolan Ryan N. Ryan	43-226	11	9/14/1990	TEX	vs	MIL		1	1.13	0	0	0	8.0	4	1	1	1	3	1	0	0	32	0
17	Gaylord Perry G. Perry	43-217	13	4/20/1982	SEA	vs	CAL	W	1	4.91	0	0	0	7.1	12	4	4	0	1	0	0	0	35	0
18	Nolan Ryan N. Ryan	43-209	11	8/28/1990	TEX	@	CAL	L	1	1.13	1	0	0	8.0	3	1	2	0	1	1	0	0	29	1
19	Nolan Ryan N. Ryan	43-198	15	8/17/1990	TEX	vs	CWS		1	0.00	0	0	0	10.0	3	0	0	0	0	1	0	0	34	0
20	Nolan Ryan N. Ryan	43-157	12	7/7/1990	TEX	vs	BOS	W	1	3.86	0	0	0	7.0	6	3	3	1	2	0	0	0	29	0
21	Nolan Ryan N. Ryan	43-131	14	6/11/1990	TEX	@	OAK	W	1	0.00	1	1	0	9.0	0	0	0	0	2	0	0	0	29	0
22	Nolan Ryan N. Ryan	43-085	16	4/26/1990	TEX	vs	CWS	W	1	0.00	1	1	0	9.0	1	0	0	0	2	0	0	0	29	1
23	Roger Clemens R. Clemens	42-352	10	7/22/2005	HOU	@	WSH	W	1	0.00	0	0	0	6.0	3	0	0	0	3	1	0	0	25	0
24	Randy Johnson R. Johnson	42-312	11	7/19/2006	NYY	vs	SEA	L	1	2.25	0	0	0	8.0	7	2	3	1	1	1	0	0	32	0
25	Roger Clemens R. Clemens	42-283	10	5/14/2005	HOU	vs	SFG	W	1	1.13	0	0	0	8.0	5	1	1	0	0	1	0	0	30	0