Before 1934, Bob Caruthers had the highest OPS by a pitcher, with an OPS of .799.

Interpreted as:

best ops with a minimum of 1.55 PA per team game by pitcher before 1934

	NAME	OPS	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	PA	TB	XBH	SH	AVG	OBP	SLG	WRC	WRAA	WOBA	WRC+	BRAA
1	Bob Caruthers B. Caruthers	.799	262	882	197	247	44	22	9	127	153	2	13	39	1,038	362	75		.280	.388	.410	210	58.6	.383	135	54
2	Jack Stivetts J. Stivetts	.776	481	1,643	283	484	73	35	31	302	102	6	123	28	1,760	720	139	9	.295	.338	.438	293	19.8	.361	99	-5.7
3	Charlie Ferguson C. Ferguson	.735	257	963	191	277	37	13	6	137	113	2		22	1,078	358	56		.288	.364	.372	203	41.3	.349	121	35.7
4	Guy Hecker G. Hecker	.719	313	1,288	236	382	43	21	11	83	59			25	1,353	500	75		.297	.330	.388	242	45.2	.332	122	43.4
5	Jim Whitney J. Whitney	.688	550	2,144	316	559	113	39	18	103	161	1		20	2,306	804	170		.261	.313	.375	380	45.5	.317	109	33.1
6	Dave Foutz D. Foutz	.632	200	771	125	202	28	13	3	93	28			17	800	265	44		.262	.289	.344	116	0.3	.295	95	-6.2
7	Tony Mullane T. Mullane	.609	703	2,434	366	582	90	30	8	155	182	21	63	93	2,640	756	128	1	.239	.298	.311	357	-35.3	.291	88	-47.5
8	Charlie Buffinton C. Buffinton	.575	441	1,647	185	398	54	12	5	156	77	4	21	11	1,728	491	71		.242	.277	.298	207	-47.6	.274	77	-62.8
9	Old Hoss Radbourn O. Hoss Radbourn	.566	647	2,466	307	582	64	11	9	113	158	9	11	26	2,633	695	84		.236	.284	.282	328	-56.5	.270	83	-69.6
10	John Coleman J. Coleman	.557	96	373	34	84	12	8	0	1	16	0		1	389	112	20		.225	.257	.300	48	-10.8	.254	77	-14.2
11	Fred Goldsmith F. Goldsmith	.545	218	851	128	191	33	10	3		26				877	253	46		.224	.247	.297	102	-21.7	.248	75	-33.1
12	Jim McCormick J. McCormick	.538	534	2,082	246	491	66	22	4	55	22	0		10	2,104	613	92		.236	.244	.294	234	-62.8	.246	78	-69.3
13	Tommy Bond T. Bond	.519	353	1,411	155	336	32	7	0		19				1,430	382	39		.238	.248	.271	159	-40.3	.239	78	-43.7
14	Pud Galvin P. Galvin	.475	718	2,702	270	546	85	30	5	98	38	2	48	20	2,742	706	120		.202	.214	.261	230	-162.3	.219	57	-178.2
15	Will White W. White	.429	403	1,478	167	271	28	7	1	11	56			0	1,537	316	36		.183	.215	.214	127	-88.5	.201	59	-89.5
16	Jack Neagle J. Neagle	.423	97	357	36	63	11	1	0		14				372	76	12		.176	.210	.213	30	-25	.198	55	-25.7
17	Fleury Sullivan F. Sullivan	.350	54	189	14	29	2	1	0		5	0			194	33	3		.153	.175	.175	11	-17.2	.165	39	-17.7
18	Ed Dugan E. Dugan	.298	22	70	4	8	0	0	0		5	1			76	8	0		.114	.184	.114	4	-7.3	.155	32	-7.7