Jordan Lyles allowed the most home runs in 2021, with 38 HR.

	NAME	HR	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Jordan Lyles J. Lyles	38	2021	TEX	32	10	13	.435	30	5.15	146	0	0	0	180.0	194	103	104	56	7	1	0	769	9	7.30	2.80	2.61	1.90	19.0	7.3	1.39	.299	5.20	117	5.33	121	9.70	-17.8
2	Patrick Corbin P. Corbin	37	2021	WSH	31	9	16	.360	31	5.82	143	0	0	0	171.2	192	111	114	60	3	0	2	751	0	7.50	3.15	2.38	1.94	19.0	8.0	1.47	.305	5.98	139	5.40	126	10.07	-21
3	Mike Foltynewicz M. Foltynewicz	35	2021	TEX	28	2	12	.143	24	5.44	97	0	0	0	139.0	139	84	86	36	9	0	0	586	2	6.28	2.33	2.69	2.27	16.6	6.1	1.26	.254	5.57	123	6.01	136	9.00	-23.9
4	Tarik Skubal T. Skubal	35	2021	DET	31	8	12	.400	29	4.34	164	0	0	0	149.1	141	72	76	47	6	1	0	634	4	9.88	2.83	3.49	2.11	25.9	7.4	1.26	.277	4.58	100	5.08	120	8.50	-14.2
5	Robbie Ray R. Ray	33	2021	TOR	32	13	7	.650	32	2.84	248	0	0	0	193.1	150	61	62	52	4	0	0	773	5	11.54	2.42	4.77	1.54	32.1	6.7	1.04	.268	2.89	63	3.68	87	6.98	11.8
6	Kyle Hendricks K. Hendricks	31	2021	CHC	32	14	7	.667	32	4.77	131	1	0	0	181.0	200	96	101	44	13	0	3	785	2	6.51	2.19	2.98	1.54	16.7	5.6	1.35	.299	5.02	115	4.89	116	9.94	-14.1
7	Zack Greinke Z. Greinke	30	2021	HOU	30	11	6	.647	29	4.16	120	1	0	0	171.0	164	79	82	36	2	0	0	697	3	6.32	1.89	3.33	1.58	17.2	5.2	1.17	.263	4.32	97	4.71	111	8.63	-9.1
8	J.A. Happ	30	2021	TOT	30	10	8	.556	30	5.79	122	0	0	0	152.1	177	98	100	48	3	0	0	671	4	7.21	2.84	2.54	1.77	18.2	7.2	1.48	.314	5.91	137	5.13	122	10.46	-15.8
9	John Means J. Means	30	2021	BAL	26	6	9	.400	26	3.62	134	1	1	0	146.2	125	59	64	26	4	0	0	590	3	8.22	1.60	5.15	1.84	22.7	4.4	1.03	.240	3.93	82	4.61	102	7.67	-0.8
10	Marco Gonzales M. Gonzales	29	2021	SEA	25	10	6	.625	25	3.96	108	1	0	0	143.1	125	63	64	42	5	0	3	585	1	6.78	2.64	2.57	1.82	18.5	7.2	1.17	.239	4.02	95	5.27	127	7.85	-18.6
11	Andrew Heaney A. Heaney	29	2021	TOT	30	8	9	.471	23	5.83	150	0	0	0	129.2	130	84	85	41	6	2	0	558	4	10.41	2.85	3.66	2.01	26.9	7.3	1.32	.304	5.90	134	4.84	111	9.02	-7
12	Kolby Allard K. Allard	29	2021	TEX	32	3	12	.200	17	5.41	104	0	0	0	124.2	128	75	80	31	4	3	0	534	4	7.51	2.24	3.35	2.09	19.5	5.8	1.28	.270	5.78	123	5.36	122	9.24	-12.7
13	Yu Darvish Y. Darvish	28	2021	SDP	30	8	11	.421	30	4.22	199	0	0	0	166.1	138	78	81	44	8	0	1	681	9	10.77	2.38	4.52	1.52	29.2	6.5	1.09	.274	4.38	107	3.90	93	7.47	5.6
14	JT Brubaker	28	2021	PIT	24	5	13	.278	24	5.36	129	0	0	0	124.1	123	74	75	38	9	0	1	538	3	9.34	2.75	3.39	2.03	24.0	7.1	1.29	.284	5.43	126	5.15	121	8.90	-12.6
15	Tyler Anderson T. Anderson	27	2021	TOT	31	7	11	.389	31	4.53	134	0	0	0	167.0	170	84	87	38	1	0	2	703	1	7.22	2.05	3.53	1.46	19.1	5.4	1.25	.284	4.69	108	4.36	104	9.16	-3
16	Lucas Giolito L. Giolito	27	2021	CWS	31	11	9	.550	31	3.53	201	1	0	0	178.2	145	70	74	52	2	0	1	720	12	10.13	2.62	3.87	1.36	27.9	7.2	1.10	.269	3.73	81	3.78	85	7.30	13
17	Yusei Kikuchi Y. Kikuchi	27	2021	SEA	29	7	9	.438	29	4.41	163	0	0	0	157.0	145	77	82	62	5	0	0	666	6	9.34	3.55	2.63	1.55	24.5	9.3	1.32	.289	4.70	106	4.60	111	8.31	-8.4
18	Drew Smyly D. Smyly	27	2021	ATL	29	11	4	.733	23	4.48	117	0	0	0	126.2	133	63	69	41	2	2	3	546	5	8.31	2.91	2.85	1.92	21.4	7.5	1.37	.295	4.90	106	5.10	122	9.45	-12.9
19	Mike Minor M. Minor	26	2021	KCR	28	8	12	.400	28	5.05	149	0	0	0	158.2	156	89	92	41	5	0	0	669	4	8.45	2.33	3.63	1.47	22.3	6.1	1.24	.290	5.22	112	4.28	101	8.85	-1
20	Aaron Nola A. Nola	26	2021	PHI	32	9	9	.500	32	4.63	223	1	1	0	180.2	165	93	95	39	9	0	1	749	0	11.11	1.94	5.72	1.30	29.8	5.2	1.13	.308	4.73	110	3.36	78	8.22	19.1
21	Taijuan Walker T. Walker	26	2021	NYM	30	7	11	.389	29	4.47	146	0	0	0	159.0	133	79	84	55	4	0	0	654	5	8.26	3.11	2.65	1.47	22.3	8.4	1.18	.253	4.75	112	4.56	109	7.53	-6.6
22	Adbert Alzolay A. Alzolay	25	2021	CHC	29	5	13	.278	21	4.58	128	0	0	1	125.2	112	64	66	34	5	1	2	519	2	9.17	2.44	3.76	1.79	24.7	6.6	1.16	.266	4.73	110	4.64	111	8.02	-6.3
23	Wil Crowe W. Crowe	25	2021	PIT	26	4	8	.333	25	5.48	111	0	0	0	116.2	126	71	75	57	6	0	1	524	3	8.56	4.40	1.95	1.93	21.2	10.9	1.57	.311	5.79	129	5.67	134	9.72	-18.5
24	Zach Davies Z. Davies	25	2021	CHC	32	6	12	.333	32	5.78	114	0	0	0	148.0	162	95	99	75	5	0	2	668	0	6.93	4.56	1.52	1.52	17.1	11.2	1.60	.305	6.02	139	5.44	130	9.85	-20.7
25	Dallas Keuchel D. Keuchel	25	2021	CWS	32	9	9	.500	30	5.28	95	0	0	0	162.0	189	95	105	59	7	0	1	720	5	5.28	3.28	1.61	1.39	13.2	8.2	1.53	.307	5.83	121	5.22	117	10.50	-13.1