Jon Gray and Jordan Lyles were tied for pitching the most innings in a loss in 2023, with 9 innings.

Interpreted as:

pitcher most ip in one regular-season game, l, 2023

	NAME	IP	L	DATE	TM		OPP	DEC	W	L%	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP
1	Jon Gray J. Gray	9.0	1	6/7/2023	TEX	vs	STL	L	0	1.000	1	1.00	12	1	0	0	4	1	1	1	0	1	0	0	29	0
2	Jordan Lyles J. Lyles	9.0	1	5/9/2023	KCR	vs	CWS	L	0	1.000	1	4.00	6	1	0	0	6	4	4	2	0	0	0	0	33	0
3	Zack Littell Z. Littell	8.0	1	9/7/2023	TBR	vs	SEA	L	0	1.000	1	1.13	4	0	0	0	5	1	1	0	1	0	0	0	29	0
4	Jordan Lyles J. Lyles	8.0	1	8/20/2023	KCR	@	CHC	L	0	1.000	1	4.50	2	1	0	0	5	4	4	2	1	0	0	0	29	0
5	Jordan Lyles J. Lyles	8.0	1	8/9/2023	KCR	@	BOS	L	0	1.000	1	4.50	6	1	0	0	7	4	4	1	1	0	0	0	30	0
6	Shane Bieber S. Bieber	8.0	1	5/21/2023	CLE	@	NYM	L	0	1.000	1	2.25	4	1	0	0	7	2	2	1	2	0	0	0	31	0
7	George Kirby G. Kirby	8.0	1	4/27/2023	SEA	@	PHI	L	0	1.000	1	1.13	7	1	0	0	4	1	1	0	1	0	0	0	28	0
8	Jordan Lyles J. Lyles	8.0	1	4/17/2023	KCR	vs	TEX	L	0	1.000	1	3.38	3	0	0	0	4	3	4	2	3	0	0	0	31	0
9	Framber Valdez F. Valdez	7.2	1	8/14/2023	HOU	@	MIA	L	0	1.000	1	3.52	4	0	0	0	6	3	4	2	1	0	0	0	30	0
10	Patrick Sandoval P. Sandoval	7.2	1	5/14/2023	LAA	@	CLE	L	0	1.000	1	2.35	5	0	0	0	5	2	3	0	1	1	0	1	30	0
11	Sandy Alcantara S. Alcantara	7.2	1	5/13/2023	MIA	vs	CIN	L	0	1.000	1	7.04	9	0	0	0	7	6	6	1	2	1	0	0	32	1
12	Jesús Luzardo J. Luzardo	7.1	1	9/28/2023	MIA	@	NYM	L	0	1.000	1	1.23	10	0	0	0	4	1	1	0	1	0	0	0	27	0
13	Cristopher Sánchez C. Sánchez	7.1	1	9/13/2023	PHI	vs	ATL	L	0	1.000	1	4.91	10	0	0	0	8	4	4	1	1	0	0	0	31	0
14	Nick Pivetta N. Pivetta	7.1	1	7/31/2023	BOS	@	SEA	L	0	1.000	1	3.68	10	0	0	0	5	3	3	2	0	0	0	0	26	0
15	Shane Bieber S. Bieber	7.1	1	6/17/2023	CLE	@	ARI	L	0	1.000	1	6.14	5	0	0	0	7	5	5	3	2	0	0	0	30	0
16	Taijuan Walker T. Walker	7.0	1	9/30/2023	PHI	@	NYM	L	0	1.000	1	5.14	3	0	0	0	4	4	4	1	4	1	0	0	30	1
17	Merrill Kelly M. Kelly	7.0	1	9/30/2023	ARI	vs	HOU	L	0	1.000	1	1.29	5	0	0	0	5	1	1	0	2	0	0	0	26	0
18	Taj Bradley T. Bradley	7.0	1	9/24/2023	TBR	vs	TOR	L	0	1.000	1	7.71	4	0	0	0	7	6	6	2	2	0	0	0	30	0
19	Michael King M. King	7.0	1	9/20/2023	NYY	vs	TOR	L	0	1.000	1	1.29	13	0	0	0	5	1	1	0	0	0	0	0	26	1
20	Kyle Bradish K. Bradish	7.0	1	9/14/2023	BAL	vs	TBR	L	0	1.000	1	5.14	5	0	0	0	7	4	4	1	0	0	0	0	27	0
21	Zack Littell Z. Littell	7.0	1	9/12/2023	TBR	@	MIN	L	0	1.000	1	3.86	8	0	0	0	5	3	3	2	0	0	0	0	26	0
22	Justin Verlander J. Verlander	7.0	1	9/12/2023	HOU	vs	OAK	L	0	1.000	1	6.43	7	0	0	0	8	5	5	2	0	0	0	0	29	0
23	Framber Valdez F. Valdez	7.0	1	9/11/2023	HOU	vs	OAK	L	0	1.000	1	3.86	10	0	0	0	4	3	3	2	1	0	0	0	25	0
24	Tanner Bibee T. Bibee	7.0	1	9/10/2023	CLE	@	LAA	L	0	1.000	1	2.57	8	0	0	0	2	2	2	0	0	0	0	0	23	0
25	Lucas Giolito L. Giolito	7.0	1	9/9/2023	CLE	@	LAA	L	0	1.000	1	2.57	9	0	0	0	3	2	4	3	0	0	0	0	25	0