Daniel Camarena had the highest on-base percentage + isolated power in 2021, with 1.33 in his rookie season.

	NAME	OBP+ISO	OBP	ISO	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	SLG	OPS	WRC	WRAA	WOBA	WRC+	BRAA
1	Daniel Camarena D. Camarena	1.33	.333	1.000	2021	SDP	6	3	1	1	0	0	1	4	0	0	2	0	0	3	4	1	0	0	0	0	.333	1.333	1.667	1	0.9	.669	331	0.9
2	Daniel Bard D. Bard	1	1.000	.000	2021	COL	64	1	1	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000	1	0.5	.879	448	0.4
3	Tommy Hunter T. Hunter	1	1.000	.000	2021	NYM	3	1	1	1	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000	1	0.5	.879	467	0.5
4	Connor Overton C. Overton	1	1.000	.000	2021	TOT	6	1	1	1	0	0	0	2	0	0	0	0	0	1	1	0	0	0	0	0	1.000	1.000	2.000	1	0.5	.879	461	0.5
5	Jose Quintana J. Quintana	1	1.000	.000	2021	TOT	7	1	0	1	0	0	0	0	1	0	0	0	0	2	1	0	0	0	0	0	1.000	1.000	2.000	1	0.8	.785	405	0.8
6	Jakson Reetz J. Reetz	1	.500	.500	2021	WSH	2	2	1	1	1	0	0	0	0	0	0	0	0	2	2	1	0	0	0	0	.500	1.000	1.500	1	0.5	.621	294	0.5
7	Alí Sánchez A. Sánchez	1	.500	.500	2021	STL	2	4	0	2	2	0	0	0	0	0	0	0	0	4	4	2	0	0	0	0	.500	1.000	1.500	1	1	.621	297	1
8	Garrett Cleavinger G. Cleavinger	1	.500	.500	2021	LAD	21	2	0	1	1	0	0	0	0	0	1	0	0	3	2	1	1	0	0	0	.500	1.000	1.500	1	0.8	.621	297	0.8
9	Josh Lowe J. Lowe	1	1.000	.000	2021	TBR	2	1	0	1	0	0	0	0	1	0	0	1	0	2	1	0	0	0	0	0	1.000	1.000	2.000	1	0.8	.785	422	0.8
10	Seth Beer S. Beer	0.94	.500	.444	2021	ARI	5	9	4	4	1	0	1	3	1	0	3	0	0	10	8	2	0	0	0	0	.444	.889	1.389	3	2.1	.570	261	2.1
11	Humberto Castellanos H. Castellanos	0.93	.429	.500	2021	ARI	11	6	1	3	0	0	1	5	0	0	1	0	0	7	6	1	0	1	0	0	.500	1.000	1.429	2	1.3	.538	240	1.2
12	Trayce Thompson T. Thompson	0.86	.400	.464	2021	CHC	15	28	6	7	1	0	4	9	7	0	11	2	0	35	20	5	0	0	0	2	.250	.714	1.114	8	4	.453	186	3.8
13	Tyler Nevin T. Nevin	0.8	.444	.357	2021	BAL	6	14	3	4	2	0	1	3	4	0	5	0	0	18	9	3	0	0	0	0	.286	.643	1.087	4	2	.452	190	2
14	Mike Trout M. Trout	0.76	.466	.291	2021	LAA	36	117	23	39	8	1	8	18	27	2	41	2	0	146	73	17	0	0	5	0	.333	.624	1.090	34	16.5	.451	189	15.9
15	Sean Manaea S. Manaea	0.75	.500	.250	2021	OAK	2	4	0	2	1	0	0	0	0	0	1	0	0	5	3	1	1	0	0	0	.500	.750	1.250	1	0.9	.530	250	0.9
16	Nick Fortes N. Fortes	0.74	.353	.387	2021	MIA	14	31	6	9	0	0	4	7	3	0	8	1	0	34	21	4	0	0	0	1	.290	.677	1.030	7	3.1	.426	168	2.9
17	Bryce Harper B. Harper	0.73	.429	.305	2021	PHI	141	488	101	151	42	1	35	84	100	5	134	13	3	599	300	78	2	4	14	12	.309	.615	1.044	130	57.7	.431	171	54
18	Chris Owings C. Owings	0.72	.420	.302	2021	COL	21	43	9	14	4	3	1	5	7	0	15	2	1	50	27	8	0	0	1	0	.326	.628	1.048	11	4.8	.431	156	3.6
19	Shohei Ohtani S. Ohtani	0.71	.372	.335	2021	LAA	155	537	103	138	26	8	46	100	96	4	189	26	10	639	318	80	0	2	20	7	.257	.592	.965	119	41.8	.393	150	39.4
20	Ronald Acuña Jr. R. Acuña Jr.	0.71	.394	.313	2021	ATL	82	297	72	84	19	1	24	52	49	9	85	17	6	360	177	44	0	5	2	0	.283	.596	.990	73	29.1	.412	158	26.4
21	Luis González L. González	0.7	.455	.250	2021	CWS	6	8	2	2	2	0	0	0	3	0	2	0	0	11	4	2	0	0	0	1	.250	.500	.955	2	0.9	.414	165	0.9
22	Brandon Belt B. Belt	0.7	.378	.323	2021	SFG	97	325	65	89	14	2	29	59	48	7	103	3	2	381	194	45	0	1	3	9	.274	.597	.975	75	28.9	.406	159	28.4
23	Yasmani Grandal Y. Grandal	0.7	.420	.280	2021	CWS	93	279	60	67	9	0	23	62	87	3	82	0	0	375	145	32	1	5	0	15	.240	.520	.939	73	27.2	.402	157	26.3
24	Byron Buxton B. Buxton	0.7	.358	.340	2021	MIN	61	235	50	72	23	0	19	32	13	6	62	9	1	254	152	42	0	0	0	0	.306	.647	1.005	53	21.9	.419	170	21.9
25	Fernando Tatis Jr. F. Tatis Jr.	0.69	.364	.328	2021	SDP	130	478	99	135	31	0	42	97	62	2	153	25	4	546	292	73	0	4	6	5	.282	.611	.975	106	39.9	.403	158	40.4