Sandy Alcantara had the most innings pitched per start with 28+ starts in 2023, with 6.6.

	NAME	IP/GS	GS	IP	SEASON	TM	G	W	L	W%	ERA	SO	CG	SHO	SV	H	ER	R	HR	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	Sandy Alcantara S. Alcantara	6.6	28	184.2	2023	MIA	28	7	12	.368	4.14	151	3	1	0	176	85	91	22	48	5	0	0	762	4	7.36	2.34	3.15	1.07	19.8	6.3	1.21	.287	4.44	93	4.03	92	8.58	7.2
2	Logan Webb L. Webb	6.55	33	216.0	2023	SFG	33	10	11	.476	3.25	194	2	1	0	201	78	83	20	31	5	0	0	850	1	8.08	1.29	6.26	0.83	22.8	3.6	1.07	.302	3.46	77	3.16	75	8.38	25.7
3	Framber Valdez F. Valdez	6.39	31	198.0	2023	HOU	31	12	11	.522	3.45	200	2	2	0	166	76	86	19	57	10	0	0	808	6	9.09	2.59	3.51	0.86	24.8	7.1	1.13	.282	3.91	82	3.49	82	7.55	16.5
4	Gerrit Cole G. Cole	6.33	33	209.0	2023	NYY	33	15	4	.789	2.63	222	2	2	0	157	61	64	20	48	7	0	0	821	4	9.56	2.07	4.63	0.86	27.0	5.8	0.98	.261	2.76	61	3.16	72	6.76	28.4
5	Zac Gallen Z. Gallen	6.18	34	210.0	2023	ARI	34	17	8	.680	3.47	220	1	1	0	188	81	87	22	47	5	0	0	846	8	9.43	2.01	4.68	0.94	26.0	5.6	1.12	.301	3.73	78	3.26	77	8.06	23.4
6	George Kirby G. Kirby	6.15	31	190.2	2023	SEA	31	12	10	.545	3.35	172	1	0	0	179	71	74	22	19	6	0	1	757	1	8.12	0.90	9.05	1.04	22.7	2.5	1.04	.292	3.49	83	3.34	81	8.45	16.7
7	Mitch Keller M. Keller	6.07	32	194.1	2023	PIT	32	13	9	.591	4.21	210	1	1	0	187	91	97	25	55	12	0	0	825	5	9.73	2.55	3.82	1.16	25.5	6.7	1.25	.310	4.49	94	3.80	87	8.66	12.5
8	Pablo López P. López	6.06	32	194.0	2023	MIN	32	11	8	.579	3.66	234	1	1	0	176	79	81	24	48	9	0	1	801	7	10.86	2.23	4.88	1.11	29.2	6.0	1.15	.313	3.76	86	3.33	78	8.16	20.5
9	Chris Bassitt C. Bassitt	6.06	33	200.0	2023	TOR	33	16	8	.667	3.60	186	1	1	0	176	80	88	28	59	12	0	2	826	4	8.37	2.66	3.15	1.26	22.5	7.1	1.18	.274	3.96	85	4.28	100	7.92	0.1
10	Aaron Nola A. Nola	6.05	32	193.2	2023	PHI	32	12	9	.571	4.46	202	0	0	0	178	96	105	32	45	1	0	0	793	2	9.39	2.09	4.49	1.49	25.5	5.7	1.15	.285	4.88	102	4.03	90	8.27	9.4
11	Corbin Burnes C. Burnes	6.05	32	193.2	2023	MIL	32	10	8	.556	3.39	200	0	0	0	141	73	77	22	66	8	0	0	784	10	9.29	3.07	3.03	1.02	25.5	8.4	1.07	.244	3.58	77	3.81	86	6.55	13.1
12	Zack Wheeler Z. Wheeler	6	32	192.0	2023	PHI	32	13	6	.684	3.61	212	0	0	0	168	77	82	20	39	9	0	0	787	1	9.94	1.83	5.44	0.94	26.9	5.0	1.08	.292	3.84	82	3.15	71	7.88	27.7
13	Luis Castillo L. Castillo	5.97	33	197.0	2023	SEA	33	13	9	.591	3.34	219	0	0	0	160	73	81	28	56	5	0	0	802	3	10.01	2.56	3.91	1.28	27.3	7.0	1.10	.267	3.70	83	3.80	93	7.31	6.6
14	Kevin Gausman K. Gausman	5.97	31	185.0	2023	TOR	31	12	9	.571	3.16	237	0	0	0	163	65	72	19	55	3	0	0	763	3	11.53	2.68	4.31	0.92	31.1	7.2	1.18	.321	3.50	75	2.97	69	7.93	27.1
15	Logan Gilbert L. Gilbert	5.96	32	190.2	2023	SEA	32	12	7	.632	3.73	189	1	1	0	169	79	82	29	36	2	0	1	770	6	8.92	1.70	5.25	1.37	24.5	4.7	1.08	.272	3.87	93	3.84	94	7.98	5.6
16	José Berríos J. Berríos	5.93	32	189.2	2023	TOR	32	11	12	.478	3.65	184	0	0	0	173	77	82	25	52	9	0	3	782	4	8.73	2.47	3.54	1.19	23.5	6.6	1.19	.289	3.89	86	3.99	93	8.21	6.1
17	Merrill Kelly M. Kelly	5.92	30	177.2	2023	ARI	30	12	8	.600	3.29	187	0	0	0	143	65	71	20	69	4	0	0	722	3	9.47	3.50	2.71	1.01	25.9	9.6	1.19	.278	3.60	74	3.84	91	7.24	8
18	Jordan Montgomery J. Montgomery	5.9	32	188.2	2023	TOT	32	10	11	.476	3.20	166	0	0	0	177	67	75	18	48	4	0	0	777	6	7.92	2.29	3.46	0.86	21.4	6.2	1.19	.294	3.58	75	3.56	83	8.44	15.8
19	Spencer Strider S. Strider	5.83	32	186.2	2023	ATL	32	19	5	.792	3.86	281	0	0	0	146	80	85	22	58	9	0	1	763	6	13.55	2.80	4.84	1.06	36.8	7.6	1.09	.316	4.10	87	2.85	66	7.04	30.3
20	Kyle Gibson K. Gibson	5.82	33	192.0	2023	BAL	33	14	9	.609	4.73	157	0	0	0	198	101	101	23	55	6	0	0	807	8	7.36	2.58	2.85	1.08	19.5	6.8	1.32	.309	4.73	113	4.13	98	9.28	1.3
21	Justin Steele J. Steele	5.78	30	173.1	2023	CHC	30	16	5	.762	3.06	176	0	0	0	167	59	71	14	36	7	0	0	716	9	9.14	1.87	4.89	0.73	24.6	5.0	1.17	.317	3.69	72	3.01	70	8.67	24.9
22	Miles Mikolas M. Mikolas	5.75	35	201.1	2023	STL	35	9	13	.409	4.78	137	0	0	0	226	107	110	26	39	8	0	0	860	4	6.12	1.74	3.51	1.16	15.9	4.5	1.32	.308	4.92	111	4.27	100	10.10	0.2
23	Sonny Gray S. Gray	5.75	32	184.0	2023	MIN	32	8	8	.500	2.79	183	0	0	0	156	57	59	8	55	6	0	0	754	6	8.95	2.69	3.33	0.39	24.3	7.3	1.15	.295	2.89	65	2.82	66	7.63	29.8
24	Lance Lynn L. Lynn	5.74	32	183.2	2023	TOT	32	13	11	.542	5.73	191	0	0	0	189	117	127	44	67	9	0	1	808	3	9.36	3.28	2.85	2.16	23.6	8.3	1.39	.292	6.22	133	5.53	125	9.26	-21.7
25	Kodai Senga K. Senga	5.74	29	166.1	2023	NYM	29	12	7	.632	2.98	202	0	0	0	126	55	60	17	77	5	0	0	694	14	10.93	4.17	2.62	0.92	29.1	11.1	1.22	.277	3.25	71	3.63	84	6.82	13