The Baltimore Orioles have the worst OPS by a team with a batting average above .300 in a season, with an OPS of .750 in 1898.

Interpreted as:

lowest ops + with ba >.300 WIN% season

	TEAM	OPS	AVG	W%	SEASON	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	OBP	SLG
1	Orioles	.750	.302	.644	1898	96	53	154	5,242	933	1,584	154	77	12	757	519	160	316	250		6,000	1,928	243	79	.382	.368
2	Spiders	.754	.301	.625	1896	80	48	135	4,856	840	1,463	207	72	28	712	436	37	316	175		5,435	1,898	307	106	.363	.391
3	Beaneaters	.756	.301	.565	1896	74	57	132	4,723	865	1,421	175	75	36	740	414	51	275	243		5,306	1,854	286	118	.364	.393
4	Phillies	.757	.301	.618	1899	94	58	154	5,353	916	1,613	241	83	31	787	441	75	337	212		5,986	2,113	355	117	.363	.395
5	Spiders	.770	.305	.646	1895	84	46	132	4,692	921	1,433	194	69	29	772	476	49	365	188		5,304	1,852	292	87	.375	.395
6	Pirates	.773	.305	.610	1927	94	60	156	5,397	817	1,648	258	78	54	759	437	29	355	65		6,077	2,224	390	214	.361	.412
7	Giants	.778	.301	.667	1894	88	44	139	4,879	962	1,469	199	96	45	806	489	33	219	326		5,481	1,995	340	80	.369	.409
8	Tigers	.778	.300	.539	1923	83	71	155	5,261	833	1,579	269	69	41	739	592	56	384	87	62	6,166	2,109	379	257	.377	.401
9	Pirates	.779	.308	.552	1922	85	69	155	5,521	865	1,698	239	110	52	777	423	32	326	145	59	6,151	2,313	401	175	.360	.419
10	Browns	.780	.303	.526	1921	81	73	154	5,446	835	1,651	246	105	67	720	415	37	402	91	71	6,103	2,308	418	205	.357	.424
11	Browns	.782	.308	.497	1920	76	77	154	5,359	797	1,650	278	84	50	707	425	38	338	121	78	6,029	2,246	412	207	.363	.419
12	Spiders	.783	.303	.527	1894	68	61	130	4,764	932	1,442	241	90	37	790	471	24	301	220		5,336	1,974	368	77	.368	.414
13	Spiders	.783	.300	.570	1893	73	55	129	4,747	976	1,425	222	98	32	833	532	30	229	252		5,309	1,939	352		.374	.408
14	Browns	.783	.307	.704	1887	95	40	138	5,048	1,131	1,550	261	78	39	862	442	67	342	581		5,557	2,084	378		.371	.413
15	Pirates	.785	.309	.559	1928	85	67	152	5,371	837	1,659	246	100	52	768	435	29	352	64		6,037	2,261	398	202	.364	.421
16	Senators	.786	.304	.636	1925	96	55	152	5,191	828	1,576	251	71	56	747	541	44	420	135	92	5,984	2,137	378	208	.374	.412
17	Athletics	.788	.304	.591	1927	91	63	155	5,287	841	1,606	281	70	56	767	553	30	325	101	63	6,089	2,195	407	219	.373	.415
18	Tigers	.788	.306	.513	1922	79	75	155	5,360	828	1,642	247	89	54	735	530	36	382	78	60	6,168	2,229	390	242	.373	.416
19	Giants	.790	.300	.608	1924	93	60	154	5,445	857	1,634	269	81	95	781	467	28	479	82	53	6,067	2,350	445	127	.358	.432
20	Giants	.790	.305	.604	1922	93	61	156	5,454	852	1,661	253	90	80	756	448	48	421	116	83	6,109	2,334	423	159	.363	.428
21	Tigers	.793	.302	.526	1925	81	73	156	5,371	903	1,623	277	84	50	798	639	32	384	97	63	6,262	2,218	411	220	.380	.413
22	Indians	.793	.303	.636	1920	98	56	154	5,203	856	1,575	301	95	35	757	574	36	376	73	93	6,067	2,171	431	254	.376	.417
23	Senators	.794	.302	.610	1930	94	60	154	5,369	892	1,620	297	98	57	819	533	38	438	101	68	6,113	2,284	452	173	.369	.425
24	Pirates	.794	.303	.575	1929	88	65	154	5,490	904	1,663	285	116	60	828	503	29	335	94		6,198	2,360	461	176	.364	.430
25	Cardinals	.795	.308	.569	1921	87	66	154	5,309	809	1,635	260	88	83	733	382	29	452	94	94	5,915	2,320	431	195	.358	.437