Adolis García has the most RBIs in an ALCS, with 15 RBIs.

Interpreted as:

most rbis by a player in a single alcs

	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	Adolis García A. García	15	2023	ALCS	TEX	7	28	7	10	0	0	5	0	2	6	1	0	30	25	5	0	0	0	0	.357	.400	.893	1.293
2	Nelson Cruz N. Cruz	13	2011	ALCS	TEX	6	22	7	8	2	0	6	2	1	4	0	1	25	28	8	0	0	0	1	.364	.440	1.273	1.713
3	B.J. Upton	11	2008	ALCS	TBR	7	28	8	9	1	0	4	4	0	7	2	0	33	22	5	0	1	0	0	.321	.394	.786	1.180
4	David Ortiz D. Ortiz	11	2004	ALCS	BOS	7	31	6	12	0	1	3	4	0	7	0	1	35	23	4	0	0	0	0	.387	.457	.742	1.199
5	Manny Ramirez M. Ramirez	10	2007	ALCS	BOS	7	22	5	9	1	0	2	9	0	5	0	0	32	16	3	0	1	1	2	.409	.563	.727	1.290
6	Hideki Matsui H. Matsui	10	2004	ALCS	NYY	7	34	9	14	6	1	2	2	0	4	0	0	36	28	9	0	0	0	0	.412	.444	.824	1.268
7	Bernie Williams B. Williams	10	2004	ALCS	NYY	7	36	4	11	3	0	2	0	0	5	0	0	36	20	5	0	0	0	0	.306	.306	.556	.861
8	Don Baylor D. Baylor	10	1982	ALCS	CAL	5	17	2	5	1	1	1	2	0	0	0	0	20	11	3	0	1	0	1	.294	.350	.647	.997
9	Yordan Alvarez Y. Alvarez	9	2023	ALCS	HOU	7	27	5	13	0	1	2	3	1	9	0	0	32	21	3	0	1	2	0	.481	.531	.778	1.309
10	Jackie Bradley Jr. J. Bradley Jr.	9	2018	ALCS	BOS	5	15	3	3	1	0	2	4	1	3	0	1	20	10	3	0	0	0	0	.200	.400	.667	1.067
11	Tom Brunansky T. Brunansky	9	1987	ALCS	MIN	5	17	5	7	4	0	2	4	0	3	0	0	21	17	6	0	0	0	0	.412	.524	1.000	1.524
12	Graig Nettles G. Nettles	9	1981	ALCS	NYY	3	12	2	6	2	0	1	1	1	0	0	0	14	11	3	0	0	0	0	.500	.571	.917	1.488
13	Kyle Tucker K. Tucker	8	2021	ALCS	HOU	6	23	4	6	1	0	2	2	0	7	1	0	25	13	3	0	0	0	1	.261	.320	.565	.885
14	Evan Longoria E. Longoria	8	2008	ALCS	TBR	7	27	8	7	3	0	4	3	0	5	0	0	30	22	7	0	0	0	3	.259	.333	.815	1.148
15	Mike Lowell M. Lowell	8	2007	ALCS	BOS	7	27	3	9	2	0	1	2	1	3	0	0	32	14	3	0	2	0	1	.333	.375	.519	.894
16	Jhonny Peralta J. Peralta	8	2007	ALCS	CLE	7	27	4	7	2	0	2	1	0	8	0	0	29	15	4	0	1	0	1	.259	.276	.556	.831
17	David Justice D. Justice	8	2000	ALCS	NYY	6	26	4	6	2	0	2	2	0	7	0	0	28	14	4	0	0	0	1	.231	.286	.538	.824
18	Jim Thome J. Thome	8	1998	ALCS	CLE	6	23	4	7	0	0	4	1	1	8	0	0	25	19	4	0	0	0	0	.304	.360	.826	1.186
19	Cecil Fielder C. Fielder	8	1996	ALCS	NYY	5	18	3	3	0	0	2	4	0	5	0	0	22	9	2	0	0	1	1	.167	.318	.500	.818
20	Chris Chambliss C. Chambliss	8	1976	ALCS	NYY	5	21	5	11	1	1	2	0	0	1	2	0	22	20	4	0	1	0	1	.524	.500	.952	1.452
21	Giancarlo Stanton G. Stanton	7	2024	ALCS	NYY	5	18	5	4	0	0	4	3	0	5	0	0	21	16	4	0	0	0	0	.222	.333	.889	1.222
22	Aaron Judge A. Judge	7	2017	ALCS	NYY	7	24	5	6	2	0	3	4	0	11	0	1	28	17	5	0	0	0	1	.250	.357	.708	1.065
23	Troy Tulowitzki T. Tulowitzki	7	2015	ALCS	TOR	6	23	3	7	2	0	1	0	0	7	0	0	23	12	3	0	0	0	0	.304	.304	.522	.826
24	Miguel Cabrera M. Cabrera	7	2011	ALCS	DET	6	20	5	8	4	0	3	7	0	6	1	0	27	21	7	0	0	2	0	.400	.556	1.050	1.606
25	Michael Young M. Young	7	2011	ALCS	TEX	6	28	3	7	3	0	1	1	0	6	0	0	29	13	4	0	0	0	1	.250	.276	.464	.740