Julio Franco is the oldest in a game with more than 0 grand slams. He was 46 years and 308 days old against the Florida Marlins on June 27, 2005.

Interpreted as:

oldest MLB player to hit a grand slam in a regular-season game

	NAME	AGE	GRANDSLAM	DATE	TM		OPP	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP
1	Julio Franco J. Franco	46-308	1	6/27/2005	ATL	@	FLA	1	1	1	0	0	1	4	0	0	0	0	0	1	4	1	0	0	0	0
2	Julio Franco J. Franco	45-285	1	6/3/2004	ATL	vs	PHI	4	1	2	0	0	1	4	0	0	2	0	0	4	5	1	0	0	0	0
3	Carlton Fisk C. Fisk	43-281	1	10/3/1991	CWS	vs	MIN	7	3	3	1	0	2	6	0	0	1	0	0	7	10	3	0	0	0	0
4	Tony Perez T. Perez	42-364	1	5/13/1985	CIN	vs	PHI	2	1	1	0	0	1	4	0	0	1	0	0	2	4	1	0	0	0	0
5	Graig Nettles G. Nettles	42-255	1	5/2/1987	ATL	vs	HOU	1	1	1	0	0	1	4	0	0	0	0	0	1	4	1	0	0	0	0
6	Albert Pujols A. Pujols	42-214	1	8/18/2022	STL	vs	COL	3	1	2	0	0	1	5	0	0	0	0	0	3	5	1	0	0	0	0
7	Henry Blanco H. Blanco	41-337	1	8/1/2013	SEA	@	BOS	3	1	1	0	0	1	4	1	0	1	0	0	4	4	1	0	0	0	0
8	Henry Blanco H. Blanco	41-290	1	6/15/2013	SEA	@	OAK	4	1	1	0	0	1	4	0	0	0	0	0	4	4	1	0	0	0	0
9	Craig Biggio C. Biggio	41-222	1	7/24/2007	HOU	vs	LAD	4	1	2	0	0	1	4	0	0	1	0	0	4	5	1	0	0	0	0
10	Dave Winfield D. Winfield	41-202	1	4/23/1993	MIN	vs	DET	4	1	1	0	0	1	4	0	0	2	0	0	4	4	1	0	0	0	0
11	Matt Stairs M. Stairs	41-195	1	9/10/2009	PHI	@	WSH	1	1	1	0	0	1	4	0	0	0	0	0	1	4	1	0	0	0	0
12	Craig Biggio C. Biggio	41-127	1	4/20/2007	HOU	@	MIL	4	2	1	0	0	1	4	1	0	0	1	0	5	4	1	0	0	0	0
13	Andre Dawson A. Dawson	41-037	1	8/16/1995	FLA	@	ATL	4	2	3	1	0	2	5	0	0	1	0	0	4	10	3	0	0	0	0
14	Raul Ibanez R. Ibanez	40-347	1	5/15/2013	SEA	@	NYY	5	2	2	0	0	2	6	0	0	0	0	0	5	8	2	0	0	0	0
15	Gary Gaetti G. Gaetti	40-346	1	7/31/1999	CHC	vs	NYM	5	1	2	0	0	1	5	0	0	0	0	0	5	5	1	0	0	0	0
16	Jose Cruz J. Cruz	40-343	1	7/16/1988	NYY	vs	CWS	1	1	1	0	0	1	4	0	0	0	0	0	1	4	1	0	0	0	0
17	Nelson Cruz N. Cruz	40-278	1	4/5/2021	MIN	@	DET	6	3	3	1	0	2	5	0	0	1	0	0	6	10	3	0	0	0	0
18	Gary Gaetti G. Gaetti	40-275	1	5/21/1999	CHC	@	ATL	3	1	2	0	0	1	4	0	0	0	0	1	3	5	1	0	0	0	0
19	Rafael Palmeiro R. Palmeiro	40-253	1	6/4/2005	BAL	@	DET	5	1	1	0	0	1	4	0	0	0	0	0	5	4	1	0	0	0	0
20	Brian Downing B. Downing	40-241	1	6/7/1991	TEX	@	NYY	3	1	2	0	0	1	4	1	0	0	0	0	4	5	1	0	0	0	0
21	Paul Molitor P. Molitor	40-224	1	4/3/1997	MIN	vs	DET	5	1	2	0	0	1	4	0	0	1	0	0	5	5	1	0	0	0	0
22	Dave Winfield D. Winfield	40-217	1	5/7/1992	TOR	@	SEA	5	2	2	0	0	1	4	0	0	0	0	0	5	5	1	0	0	0	0
23	Eddie Murray E. Murray	40-210	1	9/21/1996	BAL	vs	TOR	3	1	1	0	0	1	4	1	0	0	0	0	4	4	1	0	0	0	0
24	Albert Pujols A. Pujols	40-199	1	8/2/2020	LAA	vs	HOU	4	1	1	0	0	1	4	1	0	2	0	0	5	4	1	0	0	1	0
25	Eddie Murray E. Murray	40-168	1	8/10/1996	BAL	@	CWS	4	2	3	0	0	1	4	1	0	0	0	0	5	6	1	0	0	0	0