Wladimir Balentien, Hal Haydel and William Irwin are tied for the highest isolated power with 3+ at-bats in a season, with an isolated power of 1.333.

Interpreted as:

highest iso by a player in a season, minimum 3 ab

	NAME	ISO	AB	SEASON	TM	G	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Wladimir Balentien W. Balentien	1.333	3	2007	SEA	3	1	2	1	0	1	4	0	0	0	0	0	4	6	2	0	1	0	0	.667	.500	2.000	2.500	2	1.6	.813	424	1.6
2	Hal Haydel H. Haydel	1.333	3	1970	MIN	4	2	2	1	0	1	1	0	0	1	0	0	3	6	2	0	0	0	0	.667	.667	2.000	2.667	2	1.9	1.140	631	1.9
3	William Irwin W. Irwin	1.333	3	1912	DET	1	0	2	0	2	0	0	0	0	1	0		3	6	2	0				.667	.667	2.000	2.667	2	1.8	1.150	595	1.8
4	Keith McDonald K. McDonald	1.286	7	2000	STL	6	3	3	0	0	3	5	2	0	1	0	0	9	12	3	0	0	0	0	.429	.556	1.714	2.270	5	3.7	.809	398	3.6
5	Ed Poole E. Poole	1.250	4	1900	PIT	2	1	2	0	1	1	3	0	0	0	0		4	7	2	0				.500	.500	1.750	2.250	2	1.9	.943	430	1.9
6	Daniel Camarena D. Camarena	1.000	3	2021	SDP	6	1	1	0	0	1	4	0	0	2	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667	1	0.9	.669	331	0.9
7	Luis Campusano L. Campusano	1.000	3	2020	SDP	1	2	1	0	0	1	1	0	1	2	0	0	4	4	1	0	0	0	0	.333	.500	1.333	1.833	2	1.2	.677	339	1.2
8	Aaron Wilkerson A. Wilkerson	1.000	3	2019	MIL	8	1	1	0	0	1	2	0	0	1	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667	1	0.8	.647	308	0.8
9	A.J. Cole	1.000	3	2018	TOT	6	1	1	0	0	1	1	0	0	1	0	0	4	4	1	1	0	0	0	.333	.333	1.333	1.667	2	1.2	.677	336	1.2
10	Yu Darvish Y. Darvish	1.000	3	2016	TEX	2	1	1	0	0	1	1	0	0	1	0	0	3	4	1	0	0	0	1	.333	.333	1.333	1.667	1	0.9	.672	333	0.8
11	Anthony Ranaudo A. Ranaudo	1.000	3	2016	TOT	2	1	1	0	0	1	1	0	0	1	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667	1	0.9	.672	342	0.9
12	Steven Hill S. Hill	1.000	3	2010	STL	1	1	1	0	0	1	1	0	0	1	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667	1	0.9	.691	345	0.9
13	Dusty Brown D. Brown	1.000	3	2009	BOS	6	1	1	0	0	1	1	1	0	0	0	0	4	4	1	0	0	0	0	.333	.500	1.333	1.833	2	1.2	.683	325	1.1
14	Chris Snelling C. Snelling	1.000	4	2008	PHI	4	1	2	1	0	1	1	0	0	0	0	0	4	6	2	0	0	0	0	.500	.500	1.500	2.000	2	1.6	.821	419	1.6
15	Gene Stechschulte G. Stechschulte	1.000	3	2001	STL	65	1	2	0	0	1	3	1	0	1	0	0	4	5	1	0	0	0	0	.667	.750	1.667	2.417	2	1.9	.893	463	1.9
16	Jeff Manto J. Manto	1.000	5	2000	COL	7	2	4	2	0	1	4	2	0	0	0	0	7	9	3	0	0	0	0	.800	.857	1.800	2.657	5	3.8	.969	476	3.6
17	Damon Minor D. Minor	1.000	9	2000	SFG	10	3	4	0	0	3	6	2	0	1	0	0	11	13	3	0	0	0	0	.444	.545	1.444	1.990	5	3.9	.744	359	3.9
18	Jason Maxwell J. Maxwell	1.000	3	1998	CHC	7	2	1	0	0	1	2	0	0	2	0	0	4	4	1	1	0	0	0	.333	.333	1.333	1.667	2	1.1	.669	320	1.1
19	Rob Natal R. Natal	1.000	4	1997	FLA	4	2	2	1	0	1	3	2	0	0	0	0	7	6	2	0	1	0	0	.500	.571	1.500	2.071	3	2	.672	324	2
20	Nelson Santovenia N. Santovenia	1.000	3	1992	CWS	2	1	1	0	0	1	2	0	0	0	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667	1	0.9	.726	371	0.9
21	Pat Perry P. Perry	1.000	3	1988	TOT	47	1	1	0	0	1	2	0	0	0	0	0	3	4	1	0	0	0	0	.333	.333	1.333	1.667	1	0.9	.721	381	0.9
22	Jeff Bittiger J. Bittiger	1.000	3	1986	PHI	3	1	1	0	0	1	1	0	0	1	0	0	4	4	1	1	0	0	0	.333	.333	1.333	1.667	2	1.2	.698	353	1.2
23	Pat Keedy P. Keedy	1.000	4	1985	CAL	3	1	2	1	0	1	1	0	0	0	0	1	4	6	2	0	0	0	0	.500	.500	1.500	2.000	2	1.7	.849	442	1.6
24	Jamie Quirk J. Quirk	1.000	3	1984	TOT	4	1	1	0	0	1	2	0	0	2	0	0	4	4	1	0	1	0	0	.333	.250	1.333	1.583	1	0.7	.535	237	0.6
25	Jeff Stone J. Stone	1.000	4	1983	PHI	9	2	3	0	2	0	3	0	0	1	4	0	4	7	2	0	0	0	0	.750	.750	1.750	2.500	3	2.3	1.047	588	2.2