The Houston Astros and the Washington Nationals were tied for striking out the most batters in a loss in 2025, with 19 strikeouts.

Interpreted as:

MLB most ks in a regular-season loss pitcher this season

	TEAM	SO	L	DATE	TM		OPP	RESULT	W	L%	ERA	SHO	SV	IP	H	ER	R	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Astros	19	1	7/28/2025	HOU	vs	WSH	L 1-2	0	1.000	2.00	0	0	9.0	4	2	2	1	4	0	0	35	0	19.00	4.00	4.75	1.00	54.3	11.4	0.89	.273	2.00	4.00
2	Nationals	19	1	3/27/2025	WSH	vs	PHI	L 3-7	0	1.000	5.40	0	0	10.0	8	6	7	2	6	0	0	43	1	17.10	5.40	3.17	1.80	44.2	14.0	1.40	.375	6.30	7.20
3	Blue Jays	18	1	4/20/2025	TOR	vs	SEA	L 3-8	0	1.000	8.00	0	0	9.0	12	8	8	3	2	1	0	42	1	18.00	2.00	9.00	3.00	42.9	4.8	1.56	.500	8.00	12.00
4	Orioles	17	1	9/21/2025	BAL	vs	NYY	L 1-7	0	1.000	5.40	0	0	10.0	10	6	7	2	6	1	2	47	2	15.30	5.40	2.83	1.80	36.2	12.8	1.60	.381	6.30	9.00
5	Padres	17	1	4/25/2025	SDP	vs	TBR	L 0-1	0	1.000	0.00	0	0	9.0	6	0	1	0	1	0	0	35	0	17.00	1.00	17.00	0.00	48.6	2.9	0.78	.353	1.00	6.00
6	Royals	17	1	4/2/2025	KCR	@	MIL	L 2-3	0	1.000	0.87	0	0	10.1	8	1	3	1	7	0	2	46	1	14.81	6.10	2.43	0.87	37.0	15.2	1.45	.333	2.61	6.97
7	Reds	17	1	3/27/2025	CIN	vs	SFG	L 4-6	0	1.000	6.00	0	0	9.0	6	6	6	2	2	0	0	35	1	17.00	2.00	8.50	2.00	48.6	5.7	0.89	.286	6.00	6.00
8	Rockies	16	1	9/23/2025	COL	@	SEA	L 3-4	0	1.000	4.50	0	0	8.0	3	4	4	1	4	3	0	33	0	18.00	4.50	4.00	1.13	48.5	12.1	0.88	.222	4.50	3.38
9	Orioles	16	1	8/16/2025	BAL	@	HOU	L 4-5	0	1.000	3.09	0	0	11.2	8	4	5	1	9	0	4	50	2	12.34	6.94	1.78	0.77	32.0	18.0	1.46	.292	3.86	6.17
10	White Sox	16	1	8/7/2025	CWS	@	SEA	L 3-4	0	1.000	1.74	0	0	10.1	6	2	4	1	5	0	2	44	1	13.94	4.35	3.20	0.87	36.4	11.4	1.06	.227	3.48	5.23
11	Phillies	16	1	7/23/2025	PHI	vs	BOS	L 8-9	0	1.000	5.73	0	0	11.0	7	7	9	2	6	1	0	47	0	13.09	4.91	2.67	1.64	34.0	12.8	1.18	.227	7.36	5.73
12	Reds	16	1	7/11/2025	CIN	vs	COL	L 2-3	0	1.000	3.00	0	0	9.0	6	3	3	1	4	0	0	37	1	16.00	4.00	4.00	1.00	43.2	10.8	1.11	.313	3.00	6.00
13	Braves	16	1	7/10/2025	ATL	@	ATH	L 4-5	0	1.000	3.48	0	0	10.1	8	4	5	2	4	0	1	41	0	13.94	3.48	4.00	1.74	39.0	9.8	1.16	.316	4.35	6.97
14	Brewers	16	1	6/23/2025	MIL	vs	PIT	L 4-5	0	1.000	5.00	0	0	9.0	14	5	5	1	2	0	0	41	0	16.00	2.00	8.00	1.00	39.0	4.9	1.78	.591	5.00	14.00
15	Braves	16	1	6/15/2025	ATL	vs	COL	L 1-10	0	1.000	9.00	0	0	9.0	10	9	10	1	5	2	0	42	0	16.00	5.00	3.20	1.00	38.1	11.9	1.67	.500	10.00	10.00
16	Orioles	16	1	5/28/2025	BAL	vs	STL	L 4-6	0	1.000	6.00	0	0	9.0	12	6	6	1	5	0	0	43	1	16.00	5.00	3.20	1.00	37.2	11.6	1.89	.524	6.00	12.00
17	Giants	16	1	5/28/2025	SFG	@	DET	L 3-4	0	1.000	1.13	0	0	8.0	7	1	4	0	2	2	0	36	0	18.00	2.25	8.00	0.00	44.4	5.6	1.13	.438	4.50	7.88
18	Padres	16	1	5/12/2025	SDP	vs	LAA	L 5-9	0	1.000	8.00	0	0	9.0	7	8	9	2	7	1	0	42	1	16.00	7.00	2.29	2.00	38.1	16.7	1.56	.313	9.00	7.00
19	Blue Jays	16	1	5/3/2025	TOR	vs	CLE	L 3-5	0	1.000	5.00	0	0	9.0	4	5	5	2	3	0	0	34	0	16.00	3.00	5.33	2.00	47.1	8.8	0.78	.154	5.00	4.00
20	Diamondbacks	16	1	4/24/2025	AZ	vs	TBR	L 4-7	0	1.000	3.60	0	0	10.0	9	4	7	1	3	0	0	44	0	14.40	2.70	5.33	0.90	36.4	6.8	1.20	.333	6.30	8.10
21	Marlins	16	1	4/17/2025	MIA	vs	AZ	L 4-6	0	1.000	6.00	0	0	9.0	5	6	6	2	9	1	0	43	1	16.00	9.00	1.78	2.00	37.2	20.9	1.56	.200	6.00	5.00
22	Diamondbacks	16	1	4/5/2025	AZ	@	WSH	L 3-4	0	1.000	4.50	0	0	8.0	6	4	4	0	2	0	0	30	0	18.00	2.25	8.00	0.00	53.3	6.7	1.00	.500	4.50	6.75
23	Astros	16	1	4/2/2025	HOU	vs	SFG	L 3-6	0	1.000	6.00	0	0	9.0	6	6	6	3	5	0	0	38	1	16.00	5.00	3.20	3.00	42.1	13.2	1.22	.214	6.00	6.00
24	Marlins	15	1	9/27/2025	MIA	vs	NYM	L 0-5	0	1.000	5.00	0	0	9.0	8	5	5	1	6	0	0	41	2	15.00	6.00	2.50	1.00	36.6	14.6	1.56	.368	5.00	8.00
25	Tigers	15	1	9/16/2025	DET	vs	CLE	L 5-7	0	1.000	5.40	0	0	10.0	13	6	7	1	1	0	0	44	0	13.50	0.90	15.00	0.90	34.1	2.3	1.40	.444	6.30	11.70