Between the 1986 and 1998 seasons, Frank Thomas had the highest on-base percentage, with an on-base percentage of .443.

Interpreted as:

highest obp with a minimum of 1.55 PA per team game by a player 1986 to 1998

	NAME	OBP	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Frank Thomas F. Thomas	.443	1,236	4,406	894	1,416	281	10	286	963	989	32	675	25	15	5,501	2,575	577	0	74	120	137	.321	.584	1.027	1157	496.2	.438	170	485.4
2	Edgar Martinez E. Martinez	.424	1,245	4,374	794	1,389	337	13	174	694	780	54	647	33	25	5,259	2,274	524	10	41	65	116	.318	.520	.943	997	368.6	.412	151	336.5
3	Wade Boggs W. Boggs	.412	1,773	6,690	1,106	2,151	433	45	92	734	1,062	18	560	14	29	7,856	2,950	570	11	75	161	165	.322	.441	.853	1257	336.4	.377	129	280.3
4	Jeff Bagwell J. Bagwell	.411	1,155	4,197	778	1,276	279	21	221	835	736	71	779	128	47	5,071	2,260	521	3	64	105	109	.304	.538	.949	945	332.7	.407	156	355.5
5	Barry Bonds B. Bonds	.411	1,898	6,621	1,364	1,917	403	63	411	1,216	1,357	50	1,050	445	130	8,100	3,679	877	4	68	289	110	.290	.556	.966	1519	562.3	.410	159	572
6	Jim Thome J. Thome	.409	770	2,583	508	746	154	14	163	471	519	25	711	16	11	3,153	1,417	331	1	25	37	58	.289	.549	.958	602	211.6	.411	145	188
7	Rickey Henderson R. Henderson	.405	1,678	6,010	1,282	1,656	285	26	191	635	1,271	61	909	724	153	7,388	2,566	502	10	36	37	98	.276	.427	.832	1181	311.9	.377	135	309.8
8	John Olerud J. Olerud	.403	1,234	4,184	645	1,261	283	11	153	666	695	49	570	5	10	4,984	2,025	447	6	50	103	116	.301	.484	.887	840	242.2	.387	136	222.5
9	Jack Clark J. Clark	.401	824	2,674	450	668	109	6	155	498	682	11	797	16	13	3,393	1,254	270	0	26	58	66	.250	.469	.870	565	182.4	.386	141	165.2
10	John Kruk J. Kruk	.397	1,200	3,897	582	1,170	199	34	100	592	649	2	701	58	31	4,603	1,737	333	12	43	83	92	.300	.446	.842	718	188.8	.373	134	181
11	Mike Piazza M. Piazza	.396	840	3,119	511	1,038	148	4	200	644	330	12	493	11	11	3,482	1,794	352	0	21	72	87	.333	.575	.972	668	236	.413	158	256.7
12	Tim Salmon T. Salmon	.395	857	3,130	548	921	171	12	179	591	516	31	738	25	30	3,717	1,653	362	0	40	27	38	.294	.528	.923	669	208.5	.399	138	185.8
13	Mo Vaughn M. Vaughn	.394	1,046	3,828	628	1,165	199	10	230	752	519	71	954	28	17	4,452	2,074	439	0	34	118	94	.304	.542	.936	800	255.6	.398	136	212.8
14	Jason Kendall J. Kendall	.393	423	1,435	220	442	95	12	23	166	135	77	134	49	13	1,670	630	130	6	17	16	24	.308	.439	.832	258	49.6	.369	121	43.5
15	Dave Magadan D. Magadan	.393	1,280	3,651	471	1,061	192	12	37	432	629	11	467	10	8	4,355	1,388	241	24	40	43	83	.291	.380	.773	607	99	.352	120	102.9
16	Tony Gwynn T. Gwynn	.392	1,770	6,926	1,057	2,369	421	65	110	871	601	17	314	249	86	7,645	3,250	596	30	71	173	193	.342	.469	.861	1213	313.3	.375	134	317.4
17	Mark McGwire M. McGwire	.391	1,535	5,131	941	1,353	219	5	457	1,130	1,052	63	1,259	11	8	6,314	2,953	681	3	65	114	123	.264	.576	.967	1196	454.2	.412	157	452.9
18	Rusty Greer R. Greer	.391	662	2,435	409	756	151	17	83	402	326	13	378	23	10	2,807	1,190	251	5	28	12	50	.310	.489	.879	472	120.6	.384	124	90.4
19	Brian Giles B. Giles	.391	299	857	150	243	48	4	39	157	155	4	139	26	8	1,033	416	91	4	13	14	23	.284	.485	.876	169	41	.380	124	33.2
20	Randy Milligan R. Milligan	.391	703	2,118	305	553	106	10	70	284	447	13	431	16	18	2,594	889	186	0	16	10	67	.261	.420	.810	393	102.3	.370	131	93.8
21	Gary Sheffield G. Sheffield	.390	1,156	4,096	676	1,180	221	16	202	706	656	68	486	145	66	4,885	2,039	439	9	56	74	96	.288	.498	.888	827	245.8	.387	141	244.8
22	Manny Ramirez M. Ramirez	.390	702	2,509	442	758	169	6	154	517	359	21	532	25	19	2,923	1,401	329	2	32	29	77	.302	.558	.948	540	174.6	.404	139	151.4
23	Ben Grieve B. Grieve	.389	179	676	106	197	47	2	21	113	98	10	148	2	2	786	311	70	1	1	4	19	.291	.460	.849	126	28.7	.375	125	25.3
24	Chuck Knoblauch C. Knoblauch	.387	1,163	4,542	830	1,357	235	55	60	455	589	92	523	307	89	5,277	1,882	350	9	45	20	88	.299	.414	.801	778	141.1	.360	114	100.5
25	Tim Raines T. Raines	.387	1,564	5,767	1,015	1,698	269	67	125	695	873	30	605	412	85	6,748	2,476	461	23	55	100	91	.294	.429	.816	1001	212.1	.362	125	199.8