Lou Gehrig has the best career OPS in the postseason with 100+ at-bats, with an OPS of 1.214.

Interpreted as:

highest playoff ops by a player minimum 100 at bats

	NAME	OPS	AB	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG
1	Lou Gehrig L. Gehrig	1.214	119	34	30	43	8	3	10	35	26	2	17	0	1	150	87	21	1		2	1	.361	.483	.731
2	Babe Ruth B. Ruth	1.214	129	41	37	42	5	2	15	33	33	2	30	4	3	167	96	22	2		2	3	.326	.470	.744
3	Randy Arozarena R. Arozarena	1.104	113	33	23	38	5	1	11	17	13	2	33	3	2	128	78	17	0	0	2	2	.336	.414	.690
4	Lenny Dykstra L. Dykstra	1.094	112	32	27	36	6	1	10	19	20	2	23	5	0	136	74	17	2	0	3	0	.321	.433	.661
5	Paul Molitor P. Molitor	1.050	117	29	28	43	5	3	6	22	12	2	15	3	2	132	72	14	1	0	1	2	.368	.435	.615
6	George Brett G. Brett	1.023	166	43	30	56	8	5	10	23	17	0	20	2	3	184	104	23	0	1	6	4	.337	.397	.627
7	Carlos Beltran C. Beltran	1.021	215	65	45	66	15	1	16	42	37	2	33	11	0	256	131	32	1	1	2	3	.307	.412	.609
8	Bryce Harper B. Harper	1.016	193	53	41	54	13	1	17	34	35	2	53	8	1	232	120	31	1	1	4	5	.280	.394	.622
9	Albert Pujols A. Pujols	.995	304	88	57	97	18	1	19	54	50	5	46	1	2	360	174	38	0	1	20	7	.319	.422	.572
10	Giancarlo Stanton G. Stanton	.994	151	41	25	40	6	0	18	40	17	0	43	2	0	172	100	24	0	4	1	4	.265	.331	.662
11	Nelson Cruz N. Cruz	.979	187	50	35	52	12	0	18	38	19	1	45	1	1	207	118	30	0	0	2	5	.278	.348	.631
12	Nomar Garciaparra N. Garciaparra	.975	112	32	16	36	7	1	7	24	12	1	18	2	0	127	66	15	0	2	4	3	.321	.386	.589
13	Will Clark W. Clark	.956	117	31	20	39	8	1	5	16	13	2	19	1	1	132	64	14	0	0	3	2	.333	.409	.547
14	Lance Berkman L. Berkman	.949	186	52	38	59	11	1	9	41	31	3	41	4	1	224	99	21	0	3	6	4	.317	.417	.532
15	David Ortiz D. Ortiz	.947	304	85	51	88	22	2	17	61	59	2	72	0	1	369	165	41	0	4	11	4	.289	.404	.543
16	Dave Henderson D. Henderson	.946	121	36	24	36	10	1	7	20	14	3	35	1	0	141	69	18	0	3	1	2	.298	.376	.570
17	Duke Snider D. Snider	.945	133	36	21	38	8	0	11	26	13	1	33	1	0	149	79	19	1	1	4	2	.286	.351	.594
18	Yordan Alvarez Y. Alvarez	.944	214	60	39	63	13	3	12	41	31	5	69	0	0	252	118	28	0	2	5	1	.294	.393	.551
19	Kevin Youkilis K. Youkilis	.944	111	29	22	34	9	1	6	17	13	0	18	0	0	125	63	16	0	1	0	4	.306	.376	.568
20	Manny Ramirez M. Ramirez	.937	410	111	67	117	19	0	29	78	72	5	91	1	1	493	223	48	0	6	12	17	.285	.394	.544
21	Barry Bonds B. Bonds	.936	151	48	33	37	8	2	9	24	52	1	26	9	1	208	76	19	0	4	21	1	.245	.433	.503
22	Hideki Matsui H. Matsui	.933	205	56	32	64	15	1	10	39	27	1	33	0	0	235	111	26	0	2	2	5	.312	.391	.541
23	J.D. Martinez	.930	137	41	16	39	5	0	10	34	24	1	42	0	1	164	74	15	0	2	3	2	.285	.390	.540
24	Juan Soto J. Soto	.927	160	43	31	45	8	0	11	30	27	2	40	2	1	191	86	19	1	1	4	1	.281	.389	.538
25	Pablo Sandoval P. Sandoval	.921	157	42	21	53	13	0	6	20	10	3	24	0	0	171	84	19	0	1	3	7	.338	.386	.535