Mitch Haniger racked up the most total bases for the Mariners in 2021, with 301 bases.

	NAME	TB	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Mitch Haniger M. Haniger	301	2021	SEA	157	620	110	157	23	2	39	100	54	9	169	1	0	691	64	0	8	2	12	.253	.318	.485	.804	98	14.5	.340	120	16.9
2	Kyle Seager K. Seager	264	2021	SEA	159	603	73	128	29	1	35	101	59	4	161	3	1	670	65	0	4	2	7	.212	.285	.438	.723	77	-3.8	.308	98	-1.4
3	Ty France T. France	254	2021	SEA	152	571	85	166	32	1	18	73	46	27	106	0	0	650	51	0	6	1	13	.291	.368	.445	.813	99	20.8	.353	129	23
4	J.P. Crawford	233	2021	SEA	160	619	89	169	37	0	9	54	58	5	114	3	6	687	46	1	4	1	10	.273	.338	.376	.715	83	-0.2	.314	103	2.2
5	Luis Torrens L. Torrens	149	2021	SEA	108	346	39	84	16	2	15	47	28	1	99	0	0	378	33	0	3	1	8	.243	.299	.431	.730	45	-1	.311	101	0.3
6	Jarred Kelenic J. Kelenic	118	2021	SEA	93	337	41	61	13	1	14	43	36	3	106	6	4	377	28	0	1	0	5	.181	.265	.350	.615	32	-13.8	.270	73	-12.5
7	Dylan Moore D. Moore	111	2021	SEA	126	332	42	60	11	2	12	43	40	4	111	21	5	377	25	0	1	0	6	.181	.276	.334	.610	32	-13.5	.271	74	-12.2
8	Tom Murphy T. Murphy	97	2021	SEA	97	277	35	56	8	0	11	34	40	2	99	0	0	322	19	0	3	0	8	.202	.304	.350	.655	33	-6.3	.291	87	-5.2
9	Abraham Toro A. Toro	83	2021	SEA	60	226	28	57	11	0	5	26	22	4	33	3	2	253	16	0	1	0	4	.252	.328	.367	.695	29	-1.4	.308	98	-0.5
10	Jake Fraley J. Fraley	79	2021	SEA	78	214	27	45	7	0	9	36	46	2	71	10	2	265	16	1	2	1	3	.210	.352	.369	.721	34	1.8	.322	108	2.7
11	Taylor Trammell T. Trammell	56	2021	SEA	51	156	23	25	7	0	8	18	17	3	75	2	3	178	15	2	0	0	1	.160	.256	.359	.615	15	-6.6	.270	73	-6
12	Kyle Lewis K. Lewis	51	2021	SEA	36	130	15	32	4	0	5	11	16	1	37	2	0	147	9	0	0	0	1	.246	.333	.392	.726	18	0.7	.320	106	1.2
13	Jake Bauers J. Bauers	50	2021	SEA	72	182	20	40	4	0	2	13	18	2	51	6	0	202	6	0	0	0	1	.220	.297	.275	.572	16	-8.9	.261	67	-8.2
14	Cal Raleigh C. Raleigh	43	2021	SEA	47	139	6	25	12	0	2	13	7	1	52	0	0	148	14	0	1	0	3	.180	.223	.309	.532	8	-10.3	.231	46	-9.7
15	Shed Long Jr. S. Long Jr.	40	2021	SEA	34	111	13	22	4	1	4	17	9	0	39	1	0	121	9	1	0	0	3	.198	.258	.360	.619	10	-4.6	.268	72	-4.2
16	Jose Marmolejos J. Marmolejos	33	2021	SEA	41	106	11	17	4	0	4	12	15	0	39	0	0	122	8	0	1	0	0	.160	.262	.311	.574	9	-5.9	.256	64	-5.4
17	Sam Haggerty S. Haggerty	25	2021	SEA	35	86	15	16	3	0	2	5	6	1	28	5	1	94	5	1	0	0	1	.186	.247	.291	.538	6	-5.8	.240	52	-5.5
18	Donovan Walton D. Walton	23	2021	SEA	24	63	6	13	2	1	2	7	4	0	15	1	0	69	5	2	0	0	1	.206	.254	.365	.619	6	-2.7	.267	71	-2.5
19	Evan White E. White	23	2021	SEA	30	97	8	14	3	0	2	9	6	1	31	0	0	104	5	0	0	0	1	.144	.202	.237	.439	3	-10.1	.197	24	-9.7
20	José Godoy J. Godoy	7	2021	SEA	16	37	2	6	1	0	0	3	3	0	14	0	0	40	1	0	0	0	2	.162	.225	.189	.414	1	-4	.193	21	-3.9
21	Jack Mayfield J. Mayfield	7	2021	SEA	11	34	2	6	1	0	0	3	1	0	10	0	0	35	1	0	0	0	2	.176	.200	.206	.406	0	-3.9	.181	13	-3.7
22	Jacob Nottingham J. Nottingham	6	2021	SEA	10	26	3	3	0	0	1	2	2	2	12	0	0	31	1	0	1	0	0	.115	.226	.231	.457	1	-2.6	.213	34	-2.5
23	Eric Campbell E. Campbell	3	2021	SEA	4	11	1	3	0	0	0	0	1	0	1	0	0	12	0	0	0	0	0	.273	.333	.273	.606	1	-0.4	.277	78	-0.3
24	Justin Dunn J. Dunn	2	2021	SEA	2	3	0	1	1	0	0	1	0	0	2	0	0	3	1	0	0	0	0	.333	.333	.667	1.000	1	0.2	.414	170	0.3
25	Braden Bishop B. Bishop	1	2021	SEA	8	4	1	1	0	0	0	0	0	0	2	0	0	5	0	1	0	0	0	.250	.250	.250	.500	0	-0.4	.220	39	-0.4