Anthony Rendon had the highest on-base percentage by a third baseman in 2020, with an on-base percentage of .418.

Interpreted as:

top 10 obp with a minimum of 3.1 PA per team game for 3rd baseman 2020

	NAME	OBP	SEASON	TM	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	Anthony Rendon A. Rendon	.418	2020	LAA	52	189	29	54	11	1	9	31	38	5	31	0	0	232	94	21	0	0	2	10	.286	.497	.915	44	14.8	.395	151	14.7
2	José Ramírez J. Ramírez	.386	2020	CLE	58	219	45	64	16	1	17	46	31	3	43	10	3	254	133	34	0	1	0	2	.292	.607	.993	52	20.3	.415	167	20.9
3	J.D. Davis	.371	2020	NYM	56	190	26	47	9	0	6	19	31	7	56	0	0	229	74	15	0	1	1	8	.247	.389	.761	32	3.7	.339	118	5.2
4	Manny Machado M. Machado	.370	2020	SDP	60	224	44	68	12	1	16	47	26	0	37	6	3	254	130	29	0	4	4	9	.304	.580	.950	47	15.4	.391	150	16.4
5	Kyle Seager K. Seager	.355	2020	SEA	60	203	35	49	12	0	9	40	32	7	33	5	0	248	88	21	0	6	3	4	.241	.433	.788	35	3.8	.338	119	5.9
6	Brian Anderson B. Anderson	.345	2020	MIA	59	200	27	51	7	1	11	38	22	6	66	0	0	229	93	19	0	1	1	2	.255	.465	.810	34	5.4	.348	120	5.7
7	Isiah Kiner-Falefa I. Kiner-Falefa	.329	2020	TEX	58	211	28	59	4	3	3	10	14	2	32	8	5	228	78	10	0	1	0	6	.280	.370	.699	26	-2.4	.307	91	-2.5
8	Maikel Franco M. Franco	.321	2020	KCR	60	223	23	62	16	0	8	38	16	0	38	1	0	243	102	24	0	4	1	4	.278	.457	.778	32	1.9	.329	105	1.6
9	Yoán Moncada Y. Moncada	.320	2020	CWS	52	200	28	45	8	3	6	24	28	1	72	0	0	231	77	17	0	2	0	1	.225	.385	.705	27	-2	.309	94	-1.8
10	Tommy Edman T. Edman	.317	2020	STL	55	204	29	51	7	1	5	26	16	5	48	2	4	227	75	13	0	2	0	5	.250	.368	.685	25	-3.5	.302	90	-2.8
11	Eugenio Suárez E. Suárez	.312	2020	CIN	57	198	29	40	8	0	15	38	30	2	67	2	0	231	93	23	0	1	1	5	.202	.470	.781	31	2.3	.332	100	0.1
12	Rafael Devers R. Devers	.310	2020	BOS	57	232	32	61	16	1	11	43	13	3	67	0	0	248	112	28	0	0	0	8	.263	.483	.793	35	3.6	.337	107	2.3
13	Nolan Arenado N. Arenado	.303	2020	COL	48	182	23	46	9	0	8	26	15	0	20	0	0	201	79	17	0	4	3	7	.253	.434	.738	23	-2	.308	77	-6
14	Austin Riley A. Riley	.301	2020	ATL	51	188	24	45	7	1	8	27	16	1	49	0	0	206	78	16	0	1	1	5	.239	.415	.716	24	-2.3	.307	88	-3.3
15	Evan Longoria E. Longoria	.297	2020	SFG	53	193	26	49	10	1	7	28	11	2	39	0	1	209	82	18	0	3	0	10	.254	.425	.722	24	-2.1	.308	92	-2.1
16	Marwin Gonzalez M. Gonzalez	.286	2020	MIN	53	175	15	37	4	0	5	22	17	3	41	0	0	199	56	9	0	4	0	1	.211	.320	.606	17	-8.4	.269	68	-7.7
17	Rio Ruiz R. Ruiz	.286	2020	BAL	54	185	25	41	11	0	9	32	17	0	46	1	2	204	79	20	1	1	1	4	.222	.427	.713	23	-2.9	.303	88	-3
18	Eduardo Escobar E. Escobar	.270	2020	ARI	54	203	22	43	7	3	4	20	15	2	41	1	0	222	68	14	0	2	4	5	.212	.335	.605	16	-11.8	.257	56	-12.6