Since 1991, 26 pitchers are tied for pitching the most innings in a game, with 10 innings. The first three are Cliff Lee on April 18, 2012, Aaron Harang on July 23, 2007 and Roy Halladay on April 13, 2007 and on September 6, 2003.

Interpreted as:

most ip by a player in one regular-season game after 1990

	NAME	IP	DATE	TM		OPP	DEC	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Cliff Lee C. Lee	10.0	4/18/2012	PHI	@	SFG		1	0.00	7	0	0	0	7	0	0	0	0	0	0	0	34	0
2	Aaron Harang A. Harang	10.0	7/23/2007	CIN	vs	MIL		1	0.90	10	0	0	0	7	1	1	1	0	0	0	0	37	0
3	Roy Halladay R. Halladay	10.0	4/13/2007	TOR	vs	DET	W	1	0.90	2	1	0	0	6	1	1	1	0	0	0	0	35	0
4	Mark Mulder M. Mulder	10.0	4/23/2005	STL	vs	HOU	W	1	0.00	5	1	1	0	5	0	0	0	0	0	0	0	33	0
5	Roy Halladay R. Halladay	10.0	9/6/2003	TOR	vs	DET	W	1	0.00	5	1	1	0	3	0	0	0	1	1	0	0	35	0
6	Kevin Millwood K. Millwood	10.0	8/28/1999	ATL	@	STL		1	0.00	9	0	0	0	2	0	0	0	1	0	0	0	33	0
7	Darryl Kile D. Kile	10.0	9/20/1998	COL	@	SDP	W	1	0.00	7	0	0	0	3	0	0	0	2	0	0	0	33	0
8	Brad Radke B. Radke	10.0	9/21/1997	MIN	vs	MIL	W	1	0.90	9	1	0	0	6	1	1	1	0	0	0	0	36	0
9	Alex Fernandez A. Fernandez	10.0	10/1/1995	CWS	vs	MIN		1	0.90	6	0	0	0	5	1	1	0	3	0	0	0	37	0
10	Todd Stottlemyre T. Stottlemyre	10.0	6/16/1995	OAK	vs	KCR		1	0.90	15	0	0	0	5	1	1	1	1	0	0	0	34	1
11	Bobby Jones B. Jones	10.0	6/16/1995	NYM	vs	HOU		1	1.80	5	0	0	0	8	2	2	0	0	1	0	0	39	0
12	Tim Wakefield T. Wakefield	10.0	6/4/1995	BOS	vs	SEA	W	1	0.00	5	1	0	0	6	0	1	0	2	1	0	0	38	2
13	Bret Saberhagen B. Saberhagen	10.0	7/15/1994	NYM	vs	SDP		1	0.00	11	0	0	0	5	0	0	0	0	0	0	0	34	0
14	Dennis Martinez D. Martinez	10.0	5/6/1994	CLE	@	BAL	W	1	1.80	9	1	0	0	3	2	2	1	4	0	0	0	37	0
15	Bobby Jones B. Jones	10.0	9/29/1993	NYM	vs	STL		1	0.00	9	0	0	0	4	0	0	0	5	0	0	1	37	0
16	Randy Johnson R. Johnson	10.0	9/26/1993	SEA	vs	OAK		1	1.80	13	0	0	0	4	2	2	2	1	1	0	0	35	0
17	Cal Eldred C. Eldred	10.0	8/20/1993	MIL	@	CAL	W	1	0.90	9	1	0	0	6	1	2	0	2	0	0	0	39	0
18	Alex Fernandez A. Fernandez	10.0	6/12/1993	CWS	@	KCR		1	0.90	6	0	0	0	7	1	1	0	2	1	0	0	37	0
19	Terry Mulholland T. Mulholland	10.0	5/8/1993	PHI	vs	STL	W	1	0.90	6	1	0	0	10	1	1	0	1	0	0	0	38	0
20	Greg Maddux G. Maddux	10.0	4/30/1993	ATL	vs	STL		1	1.80	8	0	0	0	5	2	2	1	0	0	0	0	35	0
21	Tim Wakefield T. Wakefield	10.0	4/27/1993	PIT	@	ATL	W	1	1.80	1	0	0	0	6	2	2	1	10	2	0	0	46	0
22	Bill Wegman B. Wegman	10.0	10/1/1992	MIL	@	SEA	W	1	1.80	5	1	0	0	4	2	2	1	1	0	0	1	35	0
23	Mark Langston M. Langston	10.0	9/27/1992	CAL	@	CWS		1	1.80	11	0	0	0	4	2	2	0	1	0	0	0	35	0
24	Bill Wegman B. Wegman	10.0	9/16/1992	MIL	@	BOS		1	0.90	5	0	0	0	5	1	1	0	2	0	0	0	36	0
25	Mark Langston M. Langston	10.0	9/16/1992	CAL	@	SEA		1	0.90	12	0	0	0	7	1	1	0	2	1	0	0	38	0