Jack Morris has pitched the most innings in a postseason game, with 10 innings in Game 7 of the 1991 World Series versus the Braves.

	NAME	IP	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Jack Morris J. Morris	10.0	10/27/1991	MIN	vs	ATL	W	1	0.00	8	1	1	0	7	0	0	0	2	0	0	1	38	0
2	Christy Mathewson C. Mathewson	9.2	10/16/1912	NYG	@	BSA	L	1	0.93	4	1	0	0	8	1	3	0	5	0	0	1	41	0
3	John Smoltz J. Smoltz	9.0	10/17/1991	ATL	@	PIT	W	1	0.00	8	1	1	0	6	0	0	0	1	0	0	0	35	0
4	Orel Hershiser O. Hershiser	9.0	10/12/1988	LAD	vs	NYM	W	1	0.00	5	1	1	0	5	0	0	0	2	2	0	0	35	1
5	Danny Cox D. Cox	9.0	10/14/1987	STL	vs	SFG	W	1	0.00	5	1	1	0	8	0	0	0	0	0	0	0	32	0
6	Bret Saberhagen B. Saberhagen	9.0	10/27/1985	KCR	vs	STL	W	1	0.00	2	1	1	0	5	0	0	0	0	0	0	0	32	0
7	Steve Blass S. Blass	9.0	10/17/1971	PIT	@	BAL	W	1	1.00	5	1	0	0	4	1	1	0	2	0	0	0	32	0
8	Bob Gibson B. Gibson	9.0	10/10/1968	STL	vs	DET	L	1	4.00	8	1	0	0	8	4	4	0	1	0	0	1	36	0
9	Mickey Lolich M. Lolich	9.0	10/10/1968	DET	@	STL	W	1	1.00	4	1	0	0	5	1	1	1	3	0	0	0	33	0
10	Bob Gibson B. Gibson	9.0	10/12/1967	STL	@	BOS	W	1	2.00	10	1	0	0	3	2	2	0	3	0	0	0	32	1
11	Sandy Koufax S. Koufax	9.0	10/14/1965	LAD	@	MIN	W	1	0.00	10	1	1	0	3	0	0	0	3	0	0	0	33	0
12	Bob Gibson B. Gibson	9.0	10/15/1964	STL	vs	NYY	W	1	5.00	9	1	0	0	9	5	5	3	3	0	0	0	38	0
13	Ralph Terry R. Terry	9.0	10/16/1962	NYY	@	SFG	W	1	0.00	4	1	1	0	4	0	0	0	0	0	0	0	31	0
14	Lew Burdette L. Burdette	9.0	10/10/1957	MIL	@	NYY	W	1	0.00	3	1	1	0	7	0	0	0	1	0	0	1	36	0
15	Johnny Kucks J. Kucks	9.0	10/10/1956	NYY	@	BKN	W	1	0.00	1	1	1	0	3	0	0	0	3	0	0	0	31	0
16	Johnny Podres J. Podres	9.0	10/4/1955	BKN	@	NYY	W	1	0.00	4	1	1	0	8	0	0	0	2	0	0	0	35	0
17	Hal Newhouser H. Newhouser	9.0	10/10/1945	DET	@	CHC	W	1	3.00	10	1	0	0	10	3	3	0	1	0	0	0	38	1
18	Paul Derringer P. Derringer	9.0	10/8/1940	CIN	vs	DET	W	1	0.00	1	1	0	0	7	0	1	0	3	0	0	1	36	0
19	Dizzy Dean D. Dean	9.0	10/9/1934	SLN	@	DET	W	1	0.00	5	1	1	0	6	0	0	0	0	0	0	0	34	0
20	Phil Douglas P. Douglas	9.0	10/12/1921	NYG	vs	NYY	W	1	1.00	3	1	0	0	8	1	1	0	1	0	0	0	35	1
21	Stan Coveleski S. Coveleski	9.0	10/12/1920	CLE	vs	BKN	W	1	0.00	1	1	1	0	5	0	0	0	0	0	0	0	33	0
22	Eddie Cicotte E. Cicotte	9.0	10/8/1919	CWS	@	CIN	W	1	1.00	4	1	0	0	7	1	1	0	3	0	0	0	37	0
23	Babe Adams B. Adams	9.0	10/16/1909	PIT	@	DET	W	1	0.00	1	1	1	0	6	0	0	0	1	1	0	0	34	0
24	Deacon Phillippe D. Phillippe	9.0	10/10/1903	PIT	vs	BSA	L	1	5.00	2	1	0	0	11	5	7	0	0	0	0	0	38	1
25	Cy Young C. Young	9.0	10/10/1903	BSA	@	PIT	W	1	3.00	6	1	0	0	10	3	3	0	1	0	0	0	39	0