when was the last time a pitcher got 15 strikeouts in a game

Grant Holmes struck out 15 batters against the Rockies on June 15.

Interpreted as:

When was the last time a pitcher got 15 or more strikeouts in a game?

	NAME	DATE	SO	TM		OPP	DEC	GS	ERA	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Grant Holmes G. Holmes	6/15/2025	15	ATL	vs	COL	L	1	2.84	0	0	0	6.1	3	2	3	1	2	1	0	0	24	0
2	Blake Snell B. Snell	7/27/2024	15	SFG	vs	COL		1	0.00	0	0	0	6.0	2	0	0	0	2	0	0	0	22	1
3	Lance Lynn L. Lynn	6/18/2023	16	CWS	@	SEA	L	1	3.86	0	0	0	7.0	4	3	3	0	2	0	0	0	27	0
4	Spencer Strider S. Strider	9/1/2022	16	ATL	vs	COL	W	1	0.00	0	0	0	8.0	2	0	0	0	0	0	0	0	27	0
5	Gerrit Cole G. Cole	9/1/2021	15	NYY	@	LAA	W	1	1.29	0	0	0	7.0	4	1	1	0	0	0	0	0	25	0
6	Corbin Burnes C. Burnes	8/11/2021	15	MIL	@	CHC	W	1	0.00	0	0	0	8.0	4	0	0	0	0	0	0	0	27	0
7	Jacob deGrom J. deGrom	4/23/2021	15	NYM	vs	WSH	W	1	0.00	1	1	0	9.0	2	0	0	0	0	0	0	0	29	0
8	Gerrit Cole G. Cole	10/5/2019	15	HOU	vs	TBR	W	1	0.00	0	0	0	7.2	4	0	0	0	1	0	0	0	27	0
9	Gerrit Cole G. Cole	9/8/2019	15	HOU	vs	SEA	W	1	1.13	0	0	0	8.0	1	1	1	1	0	0	0	0	25	0
10	Walker Buehler W. Buehler	8/3/2019	15	LAD	vs	SDP	W	1	1.00	1	0	0	9.0	5	1	1	1	0	0	0	0	31	1
11	Walker Buehler W. Buehler	6/21/2019	16	LAD	vs	COL	W	1	2.00	1	0	0	9.0	3	2	2	2	0	0	0	0	30	0
12	Justin Verlander J. Verlander	6/12/2019	15	HOU	vs	MIL		1	3.86	0	0	0	7.0	4	3	3	3	0	0	0	0	25	0
13	Max Scherzer M. Scherzer	6/2/2019	15	WSH	@	CIN	W	1	1.13	0	0	0	8.0	3	1	1	0	1	1	0	0	29	0
14	Shane Bieber S. Bieber	5/19/2019	15	CLE	vs	BAL	W	1	0.00	1	1	0	9.0	5	0	0	0	0	0	0	0	31	0
15	Chris Sale C. Sale	5/14/2019	17	BOS	vs	COL		1	2.57	0	0	0	7.0	3	2	2	1	0	0	0	0	24	0
16	Chris Sale C. Sale	5/11/2018	15	BOS	@	TOR		1	3.00	0	0	0	9.0	6	3	3	1	0	0	0	0	33	0
17	Max Scherzer M. Scherzer	5/6/2018	15	WSH	vs	PHI		1	1.42	0	0	0	6.1	5	1	1	0	2	1	0	1	26	0
18	Gerrit Cole G. Cole	5/4/2018	16	HOU	@	ARI	W	1	0.00	1	1	0	9.0	1	0	0	0	1	0	0	0	29	0
19	James Paxton J. Paxton	5/2/2018	16	SEA	vs	OAK		1	0.00	0	0	0	7.0	5	0	0	0	1	0	0	0	27	0
20	Masahiro Tanaka M. Tanaka	9/29/2017	15	NYY	vs	TOR	W	1	0.00	0	0	0	7.0	3	0	0	0	0	0	0	0	23	0
21	Stephen Strasburg S. Strasburg	5/27/2017	15	WSH	vs	SDP	W	1	0.00	0	0	0	7.0	3	0	0	0	1	0	0	0	27	0
22	Jon Gray J. Gray	9/17/2016	16	COL	vs	SDP	W	1	0.00	1	1	0	9.0	4	0	0	0	0	0	0	0	31	0
23	Danny Duffy D. Duffy	8/1/2016	16	KCR	@	TBR	W	1	0.00	0	0	0	8.0	1	0	0	0	1	0	0	0	26	0
24	Max Scherzer M. Scherzer	5/11/2016	20	WSH	vs	DET	W	1	2.00	1	0	0	9.0	6	2	2	2	0	0	0	0	33	0
25	Tanner Roark T. Roark	4/23/2016	15	WSH	vs	MIN	W	1	0.00	0	0	0	7.0	2	0	0	0	3	0	0	0	26	0