Kevin Youkilis has the most runs in an ALCS, with 10 runs.

Interpreted as:

most runs by a player in one alcs

	NAME	R	SEASON	SERIES	TM	G	AB	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Kevin Youkilis K. Youkilis	10	2007	ALCS	BOS	7	28	14	1	1	3	7	5	0	3	0	0	33	26	5	0	0	0	1	.500	.576	.929	1.504
2	Jose Altuve J. Altuve	9	2023	ALCS	HOU	7	32	10	3	0	3	5	2	0	2	1	0	34	22	6	0	0	0	0	.313	.353	.688	1.040
3	Dustin Pedroia D. Pedroia	9	2008	ALCS	BOS	7	26	9	1	0	3	5	5	1	3	2	1	32	19	4	0	0	0	1	.346	.469	.731	1.200
4	Hideki Matsui H. Matsui	9	2004	ALCS	NYY	7	34	14	6	1	2	10	2	0	4	0	0	36	28	9	0	0	0	0	.412	.444	.824	1.268
5	Ben Zobrist B. Zobrist	8	2015	ALCS	KCR	6	25	8	3	0	2	4	2	0	2	0	0	27	17	5	0	0	0	1	.320	.370	.680	1.050
6	Evan Longoria E. Longoria	8	2008	ALCS	TBR	7	27	7	3	0	4	8	3	0	5	0	0	30	22	7	0	0	0	3	.259	.333	.815	1.148
7	Carlos Pena C. Pena	8	2008	ALCS	TBR	7	26	7	1	0	3	6	6	0	7	1	0	32	17	4	0	0	1	1	.269	.406	.654	1.060
8	B.J. Upton	8	2008	ALCS	TBR	7	28	9	1	0	4	11	4	0	7	2	0	33	22	5	0	1	0	0	.321	.394	.786	1.180
9	Dustin Pedroia D. Pedroia	8	2007	ALCS	BOS	7	29	10	3	0	1	5	3	0	5	0	0	33	16	4	1	0	0	1	.345	.406	.552	.958
10	Alex Rodriguez A. Rodriguez	8	2004	ALCS	NYY	7	31	8	2	0	2	5	4	2	6	0	0	37	16	4	0	0	0	1	.258	.378	.516	.895
11	Rickey Henderson R. Henderson	8	1989	ALCS	OAK	5	15	6	1	1	2	5	7	1	0	8	0	23	15	4	0	0	0	0	.400	.609	1.000	1.609
12	Jim Rice J. Rice	8	1986	ALCS	BOS	7	31	5	1	0	2	6	1	0	8	0	0	32	12	3	0	0	0	2	.161	.188	.387	.575
13	George Springer G. Springer	7	2025	ALCS	TOR	7	29	8	3	0	3	7	3	1	6	0	0	33	20	6	0	0	0	1	.276	.364	.690	1.053
14	Randy Arozarena R. Arozarena	7	2025	ALCS	SEA	7	25	5	0	0	1	1	3	2	11	4	0	30	8	1	0	0	0	0	.200	.333	.320	.653
15	Adolis García A. García	7	2023	ALCS	TEX	7	28	10	0	0	5	15	0	2	6	1	0	30	25	5	0	0	0	0	.357	.400	.893	1.293
16	Rafael Devers R. Devers	7	2021	ALCS	BOS	6	24	7	0	0	3	6	3	0	2	0	0	27	16	3	0	0	0	0	.292	.370	.667	1.037
17	Yordan Alvarez Y. Alvarez	7	2021	ALCS	HOU	6	23	12	3	1	1	6	2	0	5	0	0	26	20	5	0	1	0	0	.522	.538	.870	1.408
18	Nelson Cruz N. Cruz	7	2011	ALCS	TEX	6	22	8	2	0	6	13	2	1	4	0	1	25	28	8	0	0	0	1	.364	.440	1.273	1.713
19	David Ortiz D. Ortiz	7	2007	ALCS	BOS	7	24	7	3	0	1	3	6	1	5	0	0	33	13	4	0	2	0	2	.292	.424	.542	.966
20	Gary Sheffield G. Sheffield	7	2004	ALCS	NYY	7	30	10	3	0	1	5	6	0	8	0	0	36	16	4	0	0	1	1	.333	.444	.533	.978
21	Paul Molitor P. Molitor	7	1993	ALCS	TOR	6	23	9	2	1	1	5	3	1	3	0	0	27	16	4	0	0	1	0	.391	.481	.696	1.177
22	Dave Winfield D. Winfield	7	1992	ALCS	TOR	6	24	6	1	0	2	3	4	0	2	0	0	28	13	3	0	0	1	0	.250	.357	.542	.899
23	George Brett G. Brett	7	1978	ALCS	KCR	4	18	7	1	1	3	3	0	0	1	0	0	18	19	5	0	0	0	0	.389	.389	1.056	1.444
24	Cal Raleigh C. Raleigh	6	2025	ALCS	SEA	7	25	6	1	0	4	4	4	0	10	0	0	29	19	5	0	0	2	1	.240	.345	.760	1.105
25	Vladimir Guerrero Jr. V. Guerrero Jr.	6	2025	ALCS	TOR	7	26	10	3	0	3	3	4	1	2	0	0	31	22	6	0	0	3	0	.385	.484	.846	1.330