Reid Detmers has an ERA of 12.46 against the Oakland Athletics in his career.

	OPP	ERA	G	W	L	W%	GS	SO	CG	SHO	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	Athletics	12.46	1	0	1	.000	1	2	0	0	4.1	6	6	6	2	2	1	0	0	22	0	4.15	4.15	1.00	4.15	9.1	9.1	1.85	.267	12.46	12.46
2	Dodgers	6.48	5	0	3	.000	5	33	0	0	25.0	22	18	18	6	9	4	0	2	111	1	11.88	3.24	3.67	2.16	29.7	8.1	1.24	.271	6.48	7.92
3	Astros	8.21	10	1	4	.200	9	35	0	0	41.2	54	38	38	8	22	1	0	0	194	2	7.56	4.75	1.59	1.73	18.0	11.3	1.82	.359	8.21	11.66
4	Guardians	6.07	7	1	3	.250	6	29	0	0	29.2	31	20	20	5	17	2	0	1	134	0	8.80	5.16	1.71	1.52	21.6	12.7	1.62	.321	6.07	9.40
5	Mariners	6.88	8	2	2	.500	7	33	0	0	34.0	40	26	27	6	14	2	0	0	155	3	8.74	3.71	2.36	1.59	21.3	9.0	1.59	.340	7.15	10.59
6	Rangers	3.99	11	3	3	.500	10	72	0	0	56.1	46	25	26	8	22	2	0	0	236	1	11.50	3.51	3.27	1.28	30.5	9.3	1.21	.288	4.15	7.35
7	Orioles	2.43	5	1	2	.333	5	27	0	0	29.2	22	8	9	2	9	1	0	0	117	0	8.19	2.73	3.00	0.61	23.1	7.7	1.04	.256	2.73	6.67
8	Red Sox	1.95	5	2	1	.667	5	29	0	0	27.2	19	6	6	1	8	3	0	0	107	0	9.43	2.60	3.63	0.33	27.1	7.5	0.98	.273	1.95	6.18
9	Rays	0.89	4	1	0	1.000	3	15	1	1	20.1	11	2	4	1	4	0	1	0	76	1	6.64	1.77	3.75	0.44	19.7	5.3	0.74	.179	1.77	4.87
10	Yankees	0.00	1	0	0		1	4	0	0	4.1	5	0	0	0	3	0	0	0	20	0	8.31	6.23	1.33	0.00	20.0	15.0	1.85	.385	0.00	10.38
11	Royals	7.47	3	0	1	.000	3	17	0	0	15.2	19	13	13	6	5	2	0	0	69	0	9.77	2.87	3.40	3.45	24.6	7.2	1.53	.333	7.47	10.91
12	Braves	0.00	1	1	0	1.000	1	6	0	0	5.0	3	0	0	0	2	0	0	0	20	0	10.80	3.60	3.00	0.00	30.0	10.0	1.00	.250	0.00	5.40
13	Twins	5.53	6	1	2	.333	5	36	0	0	27.2	31	17	18	2	8	1	0	0	121	3	11.71	2.60	4.50	0.65	29.8	6.6	1.41	.392	5.86	10.08
14	Tigers	15.43	2	0	2	.000	1	3	0	0	4.2	13	8	8	1	3	0	0	0	30	0	5.79	5.79	1.00	1.93	10.0	10.0	3.43	.522	15.43	25.07
15	Blue Jays	3.60	3	1	1	.500	3	15	0	0	15.0	12	6	7	2	7	1	0	0	65	1	9.00	4.20	2.14	1.20	23.1	10.8	1.27	.250	4.20	7.20
16	Brewers	8.31	1	0	1	.000	1	6	0	0	4.1	4	4	7	0	3	0	0	0	21	0	12.46	6.23	2.00	0.00	28.6	14.3	1.62	.333	14.54	8.31
17	Marlins	5.40	1	0	1	.000	1	5	0	0	5.0	10	3	3	1	2	0	0	0	26	0	9.00	3.60	2.50	1.80	19.2	7.7	2.40	.500	5.40	18.00
18	Cubs	1.59	1	1	0	1.000	1	8	0	0	5.2	5	1	1	0	2	0	0	0	23	1	12.71	3.18	4.00	0.00	34.8	8.7	1.24	.385	1.59	7.94
19	White Sox	5.84	2	0	1	.000	2	16	0	0	12.1	9	8	8	4	5	0	0	0	51	0	11.68	3.65	3.20	2.92	31.4	9.8	1.14	.192	5.84	6.57
20	Diamondbacks	3.00	1	1	0	1.000	1	9	0	0	6.0	3	2	2	1	2	0	0	0	23	0	13.50	3.00	4.50	1.50	39.1	8.7	0.83	.182	3.00	4.50
21	Pirates	2.57	2	0	1	.000	1	13	0	0	7.0	8	2	2	0	2	1	0	1	32	0	16.71	2.57	6.50	0.00	40.6	6.3	1.43	.500	2.57	10.29
22	Reds	7.20	1	0	0		1	3	0	0	5.0	7	4	4	1	2	2	0	0	25	0	5.40	3.60	1.50	1.80	12.0	8.0	1.80	.353	7.20	12.60
23	Phillies	4.50	1	0	0		1	3	0	0	4.0	4	2	2	0	3	2	0	0	19	0	6.75	6.75	1.00	0.00	15.8	15.8	1.75	.364	4.50	9.00
24	Cardinals	5.14	3	0	0		1	11	0	0	7.0	9	4	5	0	4	0	1	0	34	1	14.14	5.14	2.75	0.00	32.4	11.8	1.86	.474	6.43	11.57
25	Giants	0.00	1	0	0		0	2	0	0	2.2	1	0	0	0	1	0	0	0	10	0	6.75	3.38	2.00	0.00	20.0	10.0	0.75	.143	0.00	3.38