Keith McDonald has the highest career OPS with 8+ at-bats, with an OPS of 1.788.

Interpreted as:

highest ops by a player all-time minimum 8 ab

	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	WRC	WRAA	WOBA	WRC+	BRAA
1	Keith McDonald K. McDonald	1.788	9	8	3	3	0	0	3	5	2	0	2	0	0	11	12	3	0	0	0	1	.333	.455	1.333	5	3.1	.662	304	3.1
2	Zack Britton Z. Britton	1.750	8	22	3	5	1	0	1	2	0	0	1	0	0	8	9	2	0	0	0	0	.625	.625	1.125	4	2.8	.753	391	2.7
3	Charlton Jimerson C. Jimerson	1.556	9	31	8	4	0	0	2	2	0	0	3	4	0	9	10	2	0	0	0	1	.444	.444	1.111	3	2.3	.639	303	2.3
4	Luis Silverio L. Silverio	1.524	11	8	7	6	2	1	0	3	2	0	3	1	1	14	10	3	1	0	0	0	.545	.615	.909	5	3.5	.649	319	3.4
5	Wade Lefler W. Lefler	1.444	9	6	0	5	3	0	0	4	0	0	1	0	0	9	8	3	0				.556	.556	.889	3	2.2	.648	269	2.1
6	Don Durham D. Durham	1.429	14	15	3	7	0	0	2	4	0	0	4	0	0	14	13	2	0	0	0	0	.500	.500	.929	5	3.5	.651	314	3.3
7	Rick Short R. Short	1.404	15	11	4	6	2	0	2	4	1	1	1	0	0	17	14	4	0	0	0	0	.400	.471	.933	6	3.5	.574	263	3.5
8	Fred Stiely F. Stiely	1.345	10	6	1	5	3	0	0	2	1	0	2	0		11	8	3	0				.500	.545	.800	4	2.2	.582	237	2.1
9	Hack Miller H. Miller	1.278	9	7	1	4	0	0	1	4	1	0	1	0		11	7	1	1			1	.444	.500	.778	3	2.1	.583	266	2
10	Joe Peitz J. Peitz	1.262	26	7	10	11	2	3	0	3	6	0	1	2		32	19	5	0				.423	.531	.731	11	5.5	.550	188	5.3
11	Ed Sanicki E. Sanicki	1.251	17	20	5	5	1	0	3	8	2	0	5	1	0	20	15	4	1			0	.294	.368	.882	5	3	.532	217	2.9
12	Cliff Dapper C. Dapper	1.232	17	8	2	8	1	0	1	9	2	0	2	0		19	12	2	0			0	.471	.526	.706	5	3.3	.568	255	3.2
13	Buz Phillips B. Phillips	1.231	13	14	3	6	1	0	1	2	0	0	2	0		13	10	2	0				.462	.462	.769	4	2	.529	180	1.6
14	Nick Bierbrodt N. Bierbrodt	1.225	8	7	3	4	1	0	0	0	2	0	2	0	0	13	5	1	3	0	0	0	.500	.600	.625	4	2	.531	208	1.9
15	Lance Clemons L. Clemons	1.208	8	13	5	2	0	1	1	1	1	0	1	0	0	10	7	2	1	0	0	0	.250	.333	.875	3	1.5	.513	232	1.5
16	Frank Donnelly F. Donnelly	1.206	19	8	5	8	1	2	0	3	4	0	2	0		23	13	3	0				.421	.522	.684	8	3.9	.547	192	3.6
17	Babe Ruth B. Ruth	1.164	8,399	2,503	2,174	2,873	506	136	714	2,214	2,062	43	1,330	123		10,617	5,793	1,356	113				.342	.474	.690	2727	1,436.8	.513	197	1,369.6
18	Slade Heathcott S. Heathcott	1.149	25	17	6	10	2	0	2	8	2	0	5	0	1	28	18	4	0	1	0	0	.400	.429	.720	7	3.6	.475	208	3.5
19	Darren Baker D. Baker	1.143	14	9	1	7	2	0	0	0	0	0	3	0	0	14	9	2	0	0	0	0	.500	.500	.643	4	2.1	.494	223	2.1
20	Hercules Burnett H. Burnett	1.131	21	6	7	7	0	1	2	3	3	0	2	3		25	15	3	1				.333	.417	.714	7	3.2	.480	171	3.2
21	Domingo Martinez D. Martinez	1.117	22	15	4	9	0	0	2	6	1	0	8	0	0	23	15	2	0	0	0	0	.409	.435	.682	6	3	.492	208	2.8
22	Ted Williams T. Williams	1.116	7,706	2,292	1,798	2,654	525	71	521	1,839	2,021	39	709	24	4	9,791	4,884	1,117	5	20	86	197	.344	.482	.634	2349	1,219.7	.493	188	1,067
23	Brian Milner B. Milner	1.111	9	2	3	4	0	1	0	2	0	0	1	0	0	9	6	1	0	0	0	0	.444	.444	.667	2	1.2	.490	209	1.1
24	Jose Sosa J. Sosa	1.111	9	26	2	3	1	0	1	3	0	0	3	0	0	9	7	2	0	0	0	0	.333	.333	.778	2	1.2	.492	213	1.2
25	Chucho Ramos C. Ramos	1.100	10	4	1	5	1	0	0	0	0	0	0	0		10	6	1	0			0	.500	.500	.600	2	1.4	.513	211	1.3