Javy Lopez: most Home Runs in a season as a catcher.

Johnny Bench hit 45 HR in 1970, 38 as a catcher:

I	Split	G	GS	PA	AB	R	H	2B	3B	HR	RBI	SB	CS	BB	SO	BA	OBP	SLG	OPS	TB	GDP	HBP	SH	SF	IBB	ROE	BAbip	tOPS+	sOPS+
	as C	137		569	509	77	140	28	4	38	120	5	2	49	82	.275	.333	.570	.902	290	12	0	1	10	8	6	.256	94	149
	as 1B	7		24	21	2	6	1	0	1	4	0	0	2	3	.286	.333	.476	.810	10	0	0	0	1	1	0	.278	78	100
	as 3B	1		1	1		0	0	0	0	0	0	0	0	1	.000	.000	.000	.000	0	0	0	0	0	0	0		-100	-100
	as LF	14		35	33	8	15	2	0	5	17	0	0	2	5	.455	.486	.970	1.455	32	0	0	0	0	0	2	.435	206	251
	as CF	2		7	7	1	1	0	0	0	0	0	0	0	3	.143	.143	.143	.286	1	0	0	0	0	0	0	.250	-34	-24
	as RF	7		30	29	9	14	4	0	1	6	0	0	1	6	.483	.500	.724	1.224	21	0	0	0	0	0	0	.591	168	209
	as PH	5		5	5		1	0	0	0	1	0	0	0	2	.200	.200	.200	.400	1	0	0	0	0	0	0	.333	-8	26

Javy Lopez is the champ: 42 of his 43 2003 home runs were as a catcher; one as a pinch hitter. And in only 457 at bats, 495 plate appearances:

Split	G	GS	PA	AB	R	H	2B	3B	HR	RBI	SB	CS	BB	SO	BA	OBP	SLG	OPS	TB	GDP	HBP	SH	SF	IBB	ROE	BAbip	tOPS+	sOPS+
as C	117		469	433	87	146	29	3	42	105	0	1	31	83	.337	.386	.709	1.095	307	9	4	0	1	4	6	.337	105	197
as DH	3		12	12		1	0	0	0	1	0	0	0	3	.083	.083	.083	.167	1	1	0	0	0	0	0	.111	-66	-58
as PH	13		13	11	2	3	0	0	1	3	0	0	2	3	.273	.385	.545	.930	6	0	0	0	0	1	0	.286	81	184
Other	1		1	1		0	0	0	0	0	0	0	0	1	.000	.000	.000	.000	0	0	0	0	0	0	0		-100	-100

Todd Hundley hit all 41 of his 1996 home runs as a catcher:

Split	G	GS	PA	AB	R	H	2B	3B	HR	RBI	SB	CS	BB	SO	BA	OBP	SLG	OPS	TB	GDP	HBP	SH	SF	IBB	ROE	BAbip	tOPS+	sOPS+
as C	148		614	532	84	139	31	1	41	111	1	3	78	143	.261	.358	.555	.913	295	8	3	0	1	15	6	.281	102	144
as PH	10		10	8	1	1	1	0	0	1	0	0	1	3	.125	.200	.250	.450	2	1	0	0	1	0	1	.167	2	34

Roy Campanella hit 41 home runs in 1953 but one was as a PH:

I	Split	G	GS	PA	AB	R	H	2B	3B	HR	RBI	SB	CS	BB	SO	BA	OBP	SLG	OPS	TB	GDP	HBP	SH	SF	IBB	ROE	BAbip	tOPS+	sOPS+
	as C	137		579	508	100	157	23	3	40	136	4	2	67	57	.309	.394	.602	.996	306	13	4	0	0	13	5	.285	98	171
	as PH	11		11	11	3	5	3	0	1	6	0	0	0	1	.455	.455	1.000	1.455	11	0	0	0	0	0	1	.444	179	326

Mike Piazza hit 40 home runs as a catcher twice: 1997 as a Dodger, 1999 as a Met. Todd Hundley is tied for the Met record for most home runs in a season with center fielder Carlos Beltran 2006.

		HR	HR	HR	HR	HR	HR	HR	HR	HR	AB	AB	AB	AB	AB	AB	AB	AB	AB
	Year	Tot	C	1B	3B	LF	CF	RF	PH	DH	Tot	C	1B	3B	LF	CF	RF	PH	DH
Bench	1970	45	38	1	0	5	0	1	0		605	509	21	1	33	7	29	5		Bench
Lopez	2003	43	42						1	0	456	433						11	12	Lopez
Hundley	1996	41	41						0		540	532						8		Hundley
Campanella	1953	41	40						1		519	508						11		Campanella
Bench	1972	40	34	0	2			4			538	463	8	14			53			Bench
Piazza	1997	40	40						0	0	556	520						5	31	Piazza
Piazza	1999	40	40						0	0	534	527						4	3	Piazza
Piazza	2000	38	35						1	2	482	458						6	18	Piazza

40 Home Run seasons by catchers. Can Gary Sanchez join them? Sunday, February 25, 2018