Tom Jones has the lowest career OPS by a first baseman, with an OPS of .597.

Interpreted as:

lowest career ops with a minimum of 3000 PA for a first baseman

	NAME	OPS	PA	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	WRC	WRAA	WOBA	WRC+	BRAA
1	Tom Jones T. Jones	.597	4,289	1,058	3,847	340	964	122	34	4	336	193	44	204	149		1,166	160	205				.251	.294	.303	391	-37.8	.292	90	-45.1
2	Charlie Comiskey C. Comiskey	.630	6,040	1,390	5,796	992	1,529	207	68	28	690	197	33	48	416		1,956	303	5				.264	.293	.337	808	-86	.297	84	-154.7
3	George Stovall G. Stovall	.632	5,598	1,414	5,222	547	1,382	231	56	15	564	174	33	406	142		1,770	302	169				.265	.293	.339	542	-38.2	.305	91	-60.8
4	Sid Farrar S. Farrar	.647	3,840	943	3,573	497	905	157	53	18	338	233	34		92		1,222	228					.253	.305	.342	566	-3	.307	94	-40.4
5	Kitty Bransfield K. Bransfield	.657	5,377	1,325	4,990	527	1,349	225	74	13	636	221	24	384	175		1,761	312	142				.270	.304	.353	593	19.4	.316	97	-21.8
6	Tom McCraw T. McCraw	.666	3,423	1,118	3,094	383	757	124	33	58	322	242	29	417	125	53	1,121	215	39	19	40	53	.245	.304	.362	337	-18.9	.298	92	-33.2
7	Doc Johnston D. Johnston	.670	4,270	1,056	3,774	478	992	154	68	14	381	264	48	307	139		1,324	236	184				.263	.319	.351	447	-17.3	.321	88	-57.9
8	Bill Phillips B. Phillips	.673	4,458	1,038	4,255	562	1,130	214	98	17	292	178	13		39		1,591	329					.266	.299	.374	699	61.8	.309	106	37.2
9	Jim Spencer J. Spencer	.675	4,907	1,376	4,463	469	1,108	155	23	116	522	354	17	525	11	16	1,657	294	34	39	72	108	.248	.304	.371	480	-51	.302	89	-56.8
10	Dots Miller D. Miller	.681	3,469	851	3,124	374	826	133	63	19	406	204	28	269	105		1,142	215	113				.264	.315	.366	379	10.6	.327	99	-4.1
11	Walter Holke W. Holke	.682	4,833	1,212	4,456	464	1,278	153	58	24	486	191	16	304	81		1,619	235	170				.287	.318	.363	495	-60.3	.321	88	-80.4
12	John Morrill J. Morrill	.684	3,897	937	3,614	594	925	186	66	36	182	279	4		52		1,351	288					.256	.310	.374	631	73.7	.316	109	55.6
13	Chick Gandil C. Gandil	.689	4,723	1,147	4,245	449	1,176	173	78	11	557	273	42	316	151		1,538	262	163				.277	.327	.362	531	42.7	.333	102	14.2
14	Buddy Hassett B. Hassett	.693	3,431	814	3,182	420	928	119	34	12	303	177	10	97	50		1,151	165	62			36	.292	.331	.362	374	-41	.324	91	-36.3
15	Danny Cater D. Cater	.693	3,497	945	3,256	349	902	147	20	47	405	180	15	270	18	22	1,230	214	18	28	23	122	.277	.315	.378	371	6.5	.312	98	-7.3
16	Ed Kranepool E. Kranepool	.699	5,373	1,607	4,865	487	1,279	200	22	109	557	410	13	505	10	25	1,850	331	34	51	87	119	.263	.319	.380	573	8.6	.311	97	-20.8
17	Candy Lachance C. Lachance	.699	5,269	1,254	4,893	680	1,374	197	87	39	687	217	54	417	192		1,862	323	105				.281	.319	.381	689	-22.7	.329	92	-46.2
18	Phil Todt P. Todt	.700	3,765	957	3,415	372	880	183	58	57	454	207	23	229	29		1,350	298	120				.258	.305	.395	390	-88.3	.320	77	-118.4
19	Patsy Tebeau P. Tebeau	.700	3,259	753	2,986	420	850	126	39	11	485	205	26	143	98		1,087	176	42				.285	.336	.364	448	-57	.335	83	-90.5
20	Jake Stahl J. Stahl	.705	3,745	939	3,331	391	872	146	82	29	429	217	92	627	177		1,269	257	105				.262	.324	.381	466	83.9	.343	119	75.6
21	Casey Kotchman C. Kotchman	.706	3,269	892	2,945	306	764	152	7	64	366	252	43	321	13	8	1,122	223	8	21	27	95	.259	.325	.381	351	-34.1	.311	91	-35.1
22	Hal Chase H. Chase	.710	7,939	1,919	7,417	980	2,158	322	124	57	941	276	30	660	363		2,899	503	216				.291	.319	.391	947	128.1	.341	109	70.6
23	Dick Siebert D. Siebert	.711	4,249	1,033	3,915	439	1,104	204	40	32	482	276	15	185	30		1,484	276	43			70	.282	.332	.379	489	11.3	.334	93	-37.9
24	Pete Rose P. Rose	.713	4,415	1,057	3,857	508	1,092	174	24	10	360	481	31	244	63	40	1,344	208	18	28	43	85	.283	.365	.348	521	24.1	.326	102	9.2
25	Fred Merkle F. Merkle	.714	6,426	1,638	5,782	720	1,580	290	81	61	740	454	44	645	272		2,215	432	146				.273	.331	.383	777	101.1	.344	110	70.8