Roger Clemens has pitched the most innings in an ALCS, with 22.2 innings.

Interpreted as:

most innings pitched by a player in an alcs

	NAME	IP	SEASON	SERIES	TM	G	W	L	W%	GS	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	H/9
1	Roger Clemens R. Clemens	22.2	1986	ALCS	BOS	3	1	1	.500	3	4.37	17	0	0	0	22	11	12	1	7	2	0	0	99	0	6.75	2.78	2.43	0.40	17.2	7.1	1.28	.292	4.76	8.74
2	Dave Stieb D. Stieb	20.1	1985	ALCS	TOR	3	1	1	.500	3	3.10	18	0	0	0	11	7	7	1	10	1	0	2	81	0	7.97	4.43	1.80	0.44	22.2	12.3	1.03	.196	3.10	4.87
3	Mickey Lolich M. Lolich	19.0	1972	ALCS	DET	2	0	1	.000	2	1.42	10	0	0	0	14	3	4	1	5	0	0	0	76	0	4.74	2.37	2.00	0.47	13.2	6.6	1.00	.217	1.89	6.63
4	Mike Witt M. Witt	17.2	1986	ALCS	CAL	2	1	0	1.000	2	2.55	8	1	0	0	13	5	5	2	2	0	0	0	66	0	4.08	1.02	4.00	1.02	12.1	3.0	0.85	.204	2.55	6.62
5	Jose Contreras J. Contreras	17.1	2005	ALCS	CWS	2	1	1	.500	2	3.12	6	1	0	0	12	6	6	1	2	0	0	0	66	0	3.12	1.04	3.00	0.52	9.1	3.0	0.81	.193	3.12	6.23
6	Dave Stewart D. Stewart	16.2	1992	ALCS	OAK	2	1	0	1.000	2	2.70	7	1	0	0	14	5	5	3	6	0	0	0	66	0	3.78	3.24	1.17	1.62	10.6	9.1	1.20	.220	2.70	7.56
7	Catfish Hunter C. Hunter	16.1	1973	ALCS	OAK	2	2	0	1.000	2	1.65	6	1	1	0	12	3	3	0	5	1	0	1	66	0	3.31	2.76	1.20	0.00	9.1	7.6	1.04	.222	1.65	6.61
8	Justin Verlander J. Verlander	16.0	2017	ALCS	HOU	2	2	0	1.000	2	0.56	21	1	0	0	10	1	1	0	2	1	0	0	59	0	11.81	1.13	10.50	0.00	35.6	3.4	0.75	.286	0.56	5.63
9	CC Sabathia	16.0	2009	ALCS	NYY	2	2	0	1.000	2	1.13	12	0	0	0	9	2	2	1	3	0	0	0	59	0	6.75	1.69	4.00	0.56	20.3	5.1	0.75	.186	1.13	5.06
10	Dave Stewart D. Stewart	16.0	1990	ALCS	OAK	2	2	0	1.000	2	1.13	4	0	0	0	8	2	2	1	2	0	0	0	57	0	2.25	1.13	2.00	0.56	7.0	3.5	0.63	.140	1.13	4.50
11	Dave Stewart D. Stewart	16.0	1989	ALCS	OAK	2	2	0	1.000	2	2.81	9	0	0	0	13	5	5	3	3	0	0	0	62	0	5.06	1.69	3.00	1.69	14.5	4.8	1.00	.213	2.81	7.31
12	David Wells D. Wells	15.2	1998	ALCS	NYY	2	2	0	1.000	2	2.87	18	0	0	0	12	5	5	3	2	2	0	0	60	1	10.34	1.15	9.00	1.72	30.0	3.3	0.89	.257	2.87	6.89
13	Mike Mussina M. Mussina	15.1	2003	ALCS	NYY	3	0	2	.000	2	4.11	17	0	0	0	16	7	7	5	4	0	0	1	64	0	9.98	2.35	4.25	2.93	26.6	6.3	1.30	.289	4.11	9.39
14	Randy Johnson R. Johnson	15.1	1995	ALCS	SEA	2	0	1	.000	2	2.35	13	0	0	0	12	4	6	1	2	0	0	0	60	0	7.63	1.17	6.50	0.59	21.7	3.3	0.91	.250	3.52	7.04
15	Charlie Leibrandt C. Leibrandt	15.1	1985	ALCS	KCR	3	1	2	.333	2	5.28	6	0	0	0	17	9	9	0	4	1	0	0	66	0	3.52	2.35	1.50	0.00	9.1	6.1	1.37	.309	5.28	9.98
16	Catfish Hunter C. Hunter	15.1	1972	ALCS	OAK	2	0	0		2	1.17	9	0	0	0	10	2	2	2	5	0	0	1	60	0	5.28	2.93	1.80	1.17	15.0	8.3	0.98	.182	1.17	5.87
17	Orlando Hernandez O. Hernandez	15.0	2000	ALCS	NYY	2	2	0	1.000	2	4.20	14	0	0	0	13	7	7	2	8	0	0	2	62	0	8.40	4.80	1.75	1.20	22.6	12.9	1.40	.289	4.20	7.80
18	Orlando Hernandez O. Hernandez	15.0	1999	ALCS	NYY	2	1	0	1.000	2	1.80	13	0	0	0	12	3	4	1	6	0	0	0	64	0	7.80	3.60	2.17	0.60	20.3	9.4	1.20	.250	2.40	7.20
19	Mike Mussina M. Mussina	15.0	1997	ALCS	BAL	2	0	0		2	0.60	25	0	0	0	4	1	1	0	4	0	0	0	53	0	15.00	2.40	6.25	0.00	47.2	7.5	0.53	.167	0.60	2.40
20	Andy Pettitte A. Pettitte	15.0	1996	ALCS	NYY	2	1	0	1.000	2	3.60	7	0	0	0	10	6	6	4	5	0	0	0	60	0	4.20	3.00	1.40	2.40	11.7	8.3	1.00	.136	3.60	6.00
21	Alex Fernandez A. Fernandez	15.0	1993	ALCS	CWS	2	0	2	.000	2	1.80	10	0	0	0	15	3	6	0	6	1	0	3	66	0	6.00	3.60	1.67	0.00	15.2	9.1	1.40	.306	3.60	9.00
22	Bruce Hurst B. Hurst	15.0	1986	ALCS	BOS	2	1	0	1.000	2	2.40	8	1	0	0	18	4	5	3	1	0	0	0	61	0	4.80	0.60	8.00	1.80	13.1	1.6	1.27	.306	3.00	10.80
23	Paul Splittorff P. Splittorff	15.0	1977	ALCS	KCR	2	1	0	1.000	2	2.40	4	0	0	0	14	4	4	1	3	0	0	0	62	0	2.40	1.80	1.33	0.60	6.5	4.8	1.13	.241	2.40	8.40
24	Jim Palmer J. Palmer	14.2	1973	ALCS	BAL	3	1	0	1.000	2	1.84	15	1	1	0	11	3	3	0	8	0	1	1	62	0	9.20	4.91	1.88	0.00	24.2	12.9	1.30	.282	1.84	6.75
25	Jon Lieber J. Lieber	14.1	2004	ALCS	NYY	2	1	1	.500	2	3.14	5	0	0	0	12	5	5	1	1	1	0	0	54	1	3.14	0.63	5.00	0.63	9.3	1.9	0.91	.239	3.14	7.53