John Valentin has the most RBIs in an ALDS, with 12 RBIs.

Interpreted as:

most rbi by a player in one alds

	NAME	RBI	SEASON	SERIES	TM	G	AB	R	H	2B	3B	HR	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	John Valentin J. Valentin	12	1999	ALDS	BOS	5	22	6	7	2	0	3	0	0	4	0	0	23	18	5	0	1	0	1	.318	.304	.818	1.123
2	Carlos Correa C. Correa	11	2020	ALDS	HOU	4	14	3	7	0	0	3	4	0	3	0	0	18	16	3	0	0	1	1	.500	.611	1.143	1.754
3	Nomar Garciaparra N. Garciaparra	11	1998	ALDS	BOS	4	15	4	5	1	0	3	1	0	0	0	0	18	15	4	0	2	1	1	.333	.333	1.000	1.333
4	Giancarlo Stanton G. Stanton	10	2020	ALDS	NYY	5	19	4	6	1	0	4	2	0	7	0	0	21	19	5	0	0	0	1	.316	.381	1.000	1.381
5	Jim Thome J. Thome	10	1999	ALDS	CLE	5	17	7	6	0	0	4	4	0	5	0	0	21	18	4	0	0	0	0	.353	.476	1.059	1.535
6	Edgar Martinez E. Martinez	10	1995	ALDS	SEA	5	21	6	12	3	0	2	6	0	2	0	0	27	21	5	0	0	2	0	.571	.667	1.000	1.667
7	Vladimir Guerrero Jr. V. Guerrero Jr.	9	2025	ALDS	TOR	4	17	5	9	0	0	3	2	0	1	0	0	20	18	3	0	1	1	0	.529	.550	1.059	1.609
8	Lane Thomas L. Thomas	9	2024	ALDS	CLE	5	19	2	6	0	0	2	0	0	3	0	0	19	12	2	0	0	0	0	.316	.316	.632	.947
9	Robinson Cano R. Cano	9	2011	ALDS	NYY	5	22	2	7	2	0	2	2	0	4	0	0	24	15	4	0	0	1	0	.318	.375	.682	1.057
10	Juan Gonzalez J. Gonzalez	9	1996	ALDS	TEX	4	16	5	7	0	0	5	3	0	2	0	0	19	22	5	0	0	1	0	.438	.526	1.375	1.901
11	José Abreu J. Abreu	8	2023	ALDS	HOU	4	16	3	5	0	0	3	1	0	2	0	0	17	14	3	0	0	0	0	.313	.353	.875	1.228
12	Mitch Garver M. Garver	7	2023	ALDS	TEX	2	10	3	4	1	0	1	0	0	1	0	0	10	8	2	0	0	0	2	.400	.400	.800	1.200
13	Yordan Alvarez Y. Alvarez	7	2022	ALDS	HOU	3	15	3	4	1	0	2	1	1	2	0	0	17	11	3	0	0	1	0	.267	.353	.733	1.086
14	Kyle Tucker K. Tucker	7	2021	ALDS	HOU	4	17	5	5	1	0	2	0	0	2	2	0	17	12	3	0	0	0	0	.294	.294	.706	1.000
15	Garret Anderson G. Anderson	7	2005	ALDS	LAA	5	19	2	5	0	1	2	0	0	0	0	0	20	13	3	0	1	0	0	.263	.250	.684	.934
16	Manny Ramirez M. Ramirez	7	2004	ALDS	BOS	3	13	3	5	2	0	1	1	0	4	0	0	16	10	3	0	2	0	0	.385	.375	.769	1.144
17	Tim Salmon T. Salmon	7	2002	ALDS	ANA	4	19	3	5	1	0	2	1	0	5	0	0	20	12	3	0	0	0	0	.263	.300	.632	.932
18	Troy O'Leary T. O'Leary	7	1999	ALDS	BOS	5	20	4	4	0	0	2	2	0	3	0	0	22	10	2	0	0	1	0	.200	.273	.500	.773
19	Mo Vaughn M. Vaughn	7	1998	ALDS	BOS	4	17	3	7	2	0	2	1	0	5	0	0	18	15	4	0	0	0	1	.412	.444	.882	1.327
20	Paul O'Neill P. O'Neill	7	1997	ALDS	NYY	5	19	5	8	2	0	2	3	0	0	0	0	22	16	4	0	0	0	0	.421	.500	.842	1.342
21	Ken Griffey Jr. K. Griffey Jr.	7	1995	ALDS	SEA	5	23	9	9	0	0	5	2	1	4	1	0	27	24	5	0	1	1	0	.391	.444	1.043	1.488
22	Aaron Judge A. Judge	6	2025	ALDS	NYY	4	15	5	9	2	0	1	4	0	3	0	0	19	14	3	0	0	2	0	.600	.684	.933	1.618
23	Yordan Alvarez Y. Alvarez	6	2023	ALDS	HOU	4	16	7	7	2	0	4	1	0	5	0	0	17	21	6	0	0	0	0	.438	.471	1.313	1.783
24	Giancarlo Stanton G. Stanton	6	2022	ALDS	NYY	5	16	2	2	0	0	2	2	0	6	0	0	19	8	2	0	1	0	0	.125	.211	.500	.711
25	Rafael Devers R. Devers	6	2021	ALDS	BOS	4	18	3	6	0	0	2	2	0	5	0	0	20	12	2	0	0	0	0	.333	.400	.667	1.067