Edgar Martinez has the best career on-base percentage for the Mariners, with an on-base percentage of .418.

Interpreted as:

highest on-base percentage with a minimum of 1500 PA by a mariner

	NAME	OBP	PA	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Edgar Martinez E. Martinez	.418	8,672	2,055	7,213	1,219	2,247	514	15	309	1,261	1,283	89	1,202	49	30	3,718	838	10	77	113	190	.312	.515	.933	1606	548.2	.405	147	523.9
2	Ken Phelps K. Phelps	.392	1,753	529	1,399	254	349	53	6	105	255	317	20	337	9	7	729	164	1	16	20	16	.249	.521	.913	310	108	.398	144	93.1
3	John Olerud J. Olerud	.388	2,976	702	2,490	353	709	164	2	72	405	418	26	340	3	4	1,093	238	6	36	46	83	.285	.439	.827	446	75.3	.361	122	83.3
4	Phil Bradley P. Bradley	.382	2,476	607	2,159	346	649	112	26	52	234	258	31	448	107	40	969	190	18	10	9	47	.301	.449	.830	384	96.4	.370	125	76.5
5	Alvin Davis A. Davis	.381	4,892	1,166	4,136	563	1,163	212	10	160	667	672	28	549	7	16	1,875	382	2	54	86	95	.281	.453	.834	744	189.8	.368	126	151.4
6	Ken Griffey Jr. K. Griffey Jr.	.374	7,250	1,685	6,317	1,113	1,843	341	30	417	1,216	819	48	1,081	167	60	3,495	788	6	60	172	118	.292	.553	.927	1262	393.5	.393	139	358.9
7	Alex Rodriguez A. Rodriguez	.374	3,515	790	3,126	627	966	194	13	189	595	310	31	616	133	36	1,753	396	16	32	9	63	.309	.561	.934	635	188.2	.398	137	174.5
8	Bruce Bochte B. Bochte	.370	2,770	681	2,404	298	697	134	13	58	329	313	8	316	16	17	1,031	205	19	26	34	77	.290	.429	.799	390	81.2	.357	118	59.4
9	Ichiro Suzuki I. Suzuki	.365	8,536	1,861	7,907	1,181	2,542	295	79	99	633	517	47	800	438	97	3,292	473	28	37	172	67	.321	.416	.781	1114	86.8	.338	110	107.9
10	Nelson Cruz N. Cruz	.362	2,558	606	2,254	347	640	95	3	163	414	246	40	585	7	3	1,230	261	0	18	26	51	.284	.546	.908	436	136.2	.382	147	142.8
11	Mark McLemore M. McLemore	.360	1,824	466	1,536	238	398	71	14	17	181	249	4	296	92	36	548	102	18	17	3	25	.259	.357	.717	218	-9.9	.325	98	-5.1
12	Jay Buhner J. Buhner	.360	5,828	1,440	4,922	789	1,255	231	19	307	951	788	53	1,375	6	24	2,445	557	12	53	41	121	.255	.497	.857	918	213.1	.373	125	182.7
13	Joey Cora J. Cora	.355	2,317	544	2,050	354	600	119	18	26	164	187	22	162	42	24	833	163	37	21	3	25	.293	.406	.761	301	11.3	.339	99	-3.7
14	Robinson Cano R. Cano	.353	3,050	704	2,776	389	821	159	5	107	411	232	25	407	13	10	1,311	271	0	17	43	90	.296	.472	.826	441	89.7	.352	127	97.2
15	Mike Cameron M. Cameron	.350	2,528	610	2,162	353	554	115	19	87	344	296	31	601	106	27	968	221	13	26	7	44	.256	.448	.798	351	36.5	.348	114	43.7
16	Rich Amaral R. Amaral	.345	1,799	606	1,591	274	442	73	8	11	142	154	15	249	97	31	564	92	28	11	1	30	.278	.354	.699	204	-17.7	.319	87	-28.8
17	Randy Winn R. Winn	.345	1,799	416	1,612	233	462	96	11	31	193	131	20	259	56	18	673	138	21	15	4	32	.287	.417	.762	228	8.1	.334	105	12.4
18	Ty France T. France	.343	2,361	561	2,095	267	558	110	3	60	258	158	95	422	1	1	854	173	0	13	4	69	.266	.408	.751	313	31.8	.330	117	48.3
19	Mike Blowers M. Blowers	.343	1,534	464	1,357	182	366	69	4	55	231	153	3	351	5	8	608	128	12	9	6	51	.270	.448	.791	210	22.2	.348	107	14.4
20	Tom Paciorek T. Paciorek	.343	1,510	403	1,384	164	410	90	10	39	197	95	10	218	24	18	637	139	7	14	5	35	.296	.460	.803	211	44.7	.358	120	33.7
21	Raul Ibanez R. Ibanez	.341	4,270	1,110	3,861	540	1,077	216	20	156	612	367	14	707	21	15	1,801	392	0	28	44	79	.279	.466	.808	585	64.9	.347	114	70.8
22	J.P. Crawford	.341	3,508	816	3,042	423	759	156	11	61	312	399	34	635	31	15	1,120	228	15	18	3	46	.250	.368	.709	423	2.1	.315	106	25.3
23	Bret Boone B. Boone	.336	3,467	803	3,119	467	863	167	16	143	535	262	33	610	50	24	1,491	326	18	35	17	76	.277	.478	.814	486	64.6	.349	116	71.5
24	Carlos Guillen C. Guillen	.335	1,893	488	1,665	264	439	80	16	29	211	183	5	312	15	13	638	125	23	17	6	36	.264	.383	.718	215	-19.6	.317	94	-14.2
25	Richie Sexson R. Sexson	.334	2,102	509	1,835	259	447	105	1	105	321	241	15	497	4	2	869	211	0	11	10	51	.244	.474	.808	290	32.7	.348	114	36.8