Salvador Perez had the most at-bats by a catcher in 2021, with 620 at-bats.

	NAME	AB	SEASON	TM	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Salvador Perez S. Perez	620	2021	KCR	161	88	169	24	0	48	121	28	13	170	1	0	665	337	72	0	4	4	14	.273	.316	.544	.859	105	24.6	.359	125	20.4
2	J.T. Realmuto	476	2021	PHI	134	64	125	25	4	17	73	48	11	129	13	3	537	209	46	0	2	5	8	.263	.343	.439	.782	74	9.4	.336	109	6.1
3	Christian Vázquez C. Vázquez	458	2021	BOS	138	51	118	23	1	6	49	33	2	84	8	4	498	161	30	1	4	0	15	.258	.308	.352	.659	50	-10.3	.289	76	-14.7
4	Yadier Molina Y. Molina	440	2021	STL	121	45	111	19	0	11	66	24	5	79	3	0	472	163	30	0	3	1	16	.252	.297	.370	.667	47	-9.7	.290	82	-10.9
5	Will Smith W. Smith	414	2021	LAD	130	71	107	19	2	25	76	58	18	101	3	0	501	205	46	0	11	4	11	.258	.365	.495	.860	81	20.5	.364	130	19.2
6	Willson Contreras W. Contreras	413	2021	CHC	128	61	98	20	0	21	57	52	14	138	5	4	483	181	41	0	4	1	11	.237	.340	.438	.778	68	9	.337	111	6.6
7	Buster Posey B. Posey	395	2021	SFG	113	68	120	23	0	18	56	56	1	87	0	0	454	197	41	0	2	5	15	.304	.390	.499	.889	79	24.2	.379	141	23.6
8	Sean Murphy S. Murphy	393	2021	OAK	119	47	85	23	0	17	59	40	12	114	0	0	448	159	40	0	3	0	7	.216	.306	.405	.710	52	-1.9	.309	100	0.2
9	Omar Narváez O. Narváez	391	2021	MIL	123	54	104	20	0	11	49	41	7	84	0	0	445	157	31	0	6	3	13	.266	.342	.402	.743	57	2.9	.322	100	0.1
10	Gary Sánchez G. Sánchez	383	2021	NYY	117	54	78	13	1	23	54	52	5	121	0	0	440	162	37	0	0	3	14	.204	.307	.423	.730	53	0	.314	101	0.5
11	Pedro Severino P. Severino	379	2021	BAL	113	32	94	18	0	11	46	34	1	109	0	0	419	145	29	0	5	1	9	.248	.308	.383	.690	45	-5.2	.299	87	-6.8
12	James McCann J. McCann	375	2021	NYM	121	29	87	12	1	10	46	32	2	115	1	2	412	131	23	0	3	1	12	.232	.294	.349	.643	39	-11.2	.281	78	-11.3
13	Jacob Stallings J. Stallings	374	2021	PIT	112	38	92	20	1	8	53	49	2	85	0	0	427	138	29	0	2	0	10	.246	.335	.369	.704	51	-0.9	.312	92	-4.1
14	Martín Maldonado M. Maldonado	373	2021	HOU	125	40	64	10	1	12	36	47	5	127	0	0	426	112	23	0	1	1	9	.172	.272	.300	.573	32	-20	.258	62	-20.1
15	Eric Haase E. Haase	351	2021	DET	98	48	81	12	1	22	61	26	2	119	2	0	381	161	35	0	2	0	11	.231	.286	.459	.745	47	0.6	.316	100	0
16	Tyler Stephenson T. Stephenson	350	2021	CIN	132	56	100	21	0	10	45	41	6	75	0	0	402	151	31	0	5	1	11	.286	.366	.431	.797	59	10.5	.346	111	5.6
17	Yan Gomes Y. Gomes	349	2021	TOT	103	49	88	15	1	14	52	19	6	78	0	0	375	147	30	0	1	3	15	.252	.301	.421	.723	44	-1.9	.308	94	-2.7
18	Tucker Barnhart T. Barnhart	348	2021	CIN	116	41	86	21	0	7	48	29	8	100	0	0	388	128	28	0	3	1	8	.247	.317	.368	.685	42	-4.5	.300	81	-9.3
19	Elias Díaz E. Díaz	338	2021	COL	106	52	83	18	1	18	44	30	2	60	0	0	371	157	37	0	1	1	15	.246	.310	.464	.774	50	4.7	.330	91	-4.4
20	Mike Zunino M. Zunino	333	2021	TBR	109	64	72	11	2	33	62	34	7	132	0	0	375	186	46	0	1	0	7	.216	.301	.559	.860	59	13.7	.358	134	15.4
21	Victor Caratini V. Caratini	313	2021	SDP	116	33	71	9	0	7	39	35	4	82	2	0	356	101	16	0	4	8	13	.227	.309	.323	.632	31	-12.1	.273	74	-11.7
22	Carson Kelly C. Kelly	304	2021	ARI	98	41	73	11	1	13	46	44	6	74	0	0	359	125	25	0	5	1	10	.240	.343	.411	.754	48	4.2	.328	104	1.9
23	Jorge Alfaro J. Alfaro	295	2021	MIA	92	22	72	15	1	4	30	11	5	99	8	1	311	101	20	0	0	0	8	.244	.283	.342	.625	27	-10.5	.274	69	-12.4
24	Austin Hedges A. Hedges	286	2021	CLE	88	32	51	7	0	10	31	15	1	87	1	0	312	88	17	7	3	1	7	.178	.220	.308	.527	15	-22.5	.227	42	-22.2
25	Jose Trevino J. Trevino	285	2021	TEX	89	23	68	14	0	5	30	12	0	57	1	1	302	97	19	2	3	1	13	.239	.267	.340	.607	23	-13.3	.261	61	-14.4