Bernie Williams has the most career ribbies in the ALCS, with 33 RBIs.

Interpreted as:

most rbis by a player in alcs history

	NAME	RBI	SERIES	G	AB	R	H	2B	3B	HR	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Bernie Williams B. Williams	33	ALCS	41	162	31	52	10	0	9	25	1	28	4	2	189	89	19	0	1	2	3	.321	.413	.549	.962
2	David Ortiz D. Ortiz	30	ALCS	39	145	21	37	6	2	8	22	2	38	0	1	171	71	16	0	2	1	3	.255	.357	.490	.846
3	Derek Jeter D. Jeter	24	ALCS	54	226	32	58	10	2	7	29	0	42	8	1	261	93	19	5	1	1	3	.257	.340	.412	.751
4	Jose Altuve J. Altuve	23	ALCS	42	166	38	49	8	0	12	24	0	25	3	1	191	93	20	0	1	0	4	.295	.382	.560	.942
5	Manny Ramirez M. Ramirez	23	ALCS	39	144	21	46	5	0	10	26	1	32	0	1	173	81	15	0	2	2	8	.319	.422	.563	.984
6	Nelson Cruz N. Cruz	20	ALCS	16	58	14	19	6	0	8	7	1	12	0	1	66	49	14	0	0	1	2	.328	.409	.845	1.254
7	Reggie Jackson R. Jackson	20	ALCS	45	163	16	37	7	0	6	17	0	41	4	2	181	62	13	0	1	1	1	.227	.298	.380	.679
8	Yuli Gurriel Y. Gurriel	19	ALCS	35	126	14	32	5	0	4	13	1	9	1	0	141	49	9	0	1	2	3	.254	.326	.389	.715
9	George Brett G. Brett	19	ALCS	27	103	22	35	5	4	9	11	0	9	0	3	115	75	18	0	1	3	2	.340	.400	.728	1.128
10	Alex Rodriguez A. Rodriguez	18	ALCS	29	105	22	31	8	0	7	18	3	25	3	0	127	60	15	0	1	3	3	.295	.409	.571	.981
11	Carlos Correa C. Correa	17	ALCS	31	119	15	32	7	0	6	10	1	35	1	0	130	57	13	0	0	1	2	.269	.331	.479	.810
12	Hideki Matsui H. Matsui	17	ALCS	20	81	13	27	10	1	2	8	0	11	0	0	90	45	13	0	1	0	2	.333	.389	.556	.944
13	Jorge Posada J. Posada	17	ALCS	45	147	21	33	10	0	4	32	2	34	1	2	182	55	14	0	1	4	5	.224	.368	.374	.742
14	John Olerud J. Olerud	17	ALCS	32	116	16	32	6	0	4	14	1	14	1	0	132	50	10	0	1	1	3	.276	.356	.431	.787
15	Don Baylor D. Baylor	17	ALCS	28	96	13	26	4	1	3	11	3	16	0	1	112	41	8	0	2	1	3	.271	.357	.427	.784
16	Graig Nettles G. Nettles	17	ALCS	20	71	9	20	3	1	5	4	1	8	0	0	76	40	9	0	0	0	1	.282	.329	.563	.892
17	Yordan Alvarez Y. Alvarez	16	ALCS	23	86	15	29	4	2	3	10	2	32	0	0	100	46	9	0	2	3	0	.337	.410	.535	.945
18	Jason Varitek J. Varitek	16	ALCS	31	114	15	27	7	1	7	8	2	28	0	0	126	57	15	1	1	1	2	.237	.296	.500	.796
19	Adolis García A. García	15	ALCS	7	28	7	10	0	0	5	0	2	6	1	0	30	25	5	0	0	0	0	.357	.400	.893	1.293
20	Alex Bregman A. Bregman	15	ALCS	42	149	21	29	5	1	5	28	4	19	0	1	181	51	11	0	0	2	8	.195	.337	.342	.679
21	Aaron Judge A. Judge	15	ALCS	22	83	13	16	2	0	6	10	1	33	2	1	96	36	8	0	2	1	2	.193	.281	.434	.715
22	Miguel Cabrera M. Cabrera	15	ALCS	16	58	11	19	5	0	5	12	0	15	2	0	70	39	10	0	0	3	2	.328	.443	.672	1.115
23	Roberto Alomar R. Alomar	15	ALCS	28	114	14	36	5	0	3	15	0	14	11	0	132	50	8	2	1	2	5	.316	.392	.439	.831
24	George Springer G. Springer	14	ALCS	25	102	10	22	3	0	5	13	0	28	1	1	115	40	8	0	0	0	4	.216	.304	.392	.697
25	Jhonny Peralta J. Peralta	14	ALCS	23	89	10	25	7	0	6	4	0	18	0	0	95	50	13	1	1	0	2	.281	.309	.562	.870