Luke Keaschall had the highest OPS by a rookie in April 2025, with an OPS of 1.065.

	NAME	OPS	MONTH	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG
1	Luke Keaschall L. Keaschall	1.065	April 2025	7	19	4	7	3	0	0	2	5	2	2	5	0	26	10	3	0	0	0	0	.368	.538	.526
2	Agustín Ramírez A. Ramírez	1.043	April 2025	8	31	5	9	4	0	3	5	2	0	5	1	1	33	22	7	0	0	0	1	.290	.333	.710
3	Drake Baldwin D. Baldwin	.945	April 2025	13	37	4	12	2	0	2	6	5	0	7	0	0	42	20	4	0	0	0	1	.324	.405	.541
4	Kameron Misner K. Misner	.901	April 2025	22	64	12	20	6	1	2	9	6	1	15	1	0	73	34	9	0	2	0	1	.313	.370	.531
5	Yohel Pozo Y. Pozo	.881	April 2025	8	28	4	9	3	0	1	2	1	0	1	0	0	29	15	4	0	0	0	0	.321	.345	.536
6	Leo Rivas L. Rivas	.879	April 2025	13	30	9	11	0	0	0	3	9	0	6	3	0	39	11	0	0	0	0	0	.367	.513	.367
7	Thomas Saggese T. Saggese	.876	April 2025	14	41	4	14	4	0	1	7	2	0	11	0	0	44	21	5	0	1	0	1	.341	.364	.512
8	Matt Mervis M. Mervis	.848	April 2025	22	68	9	15	2	0	7	14	6	1	27	0	0	76	38	9	0	1	1	0	.221	.289	.559
9	Kristian Campbell K. Campbell	.848	April 2025	24	87	14	25	6	0	3	10	15	0	27	2	1	103	40	9	0	1	0	0	.287	.388	.460
10	Gustavo Campero G. Campero	.833	April 2025	1	3	1	1	0	0	0	0	1	0	0	1	0	4	1	0	0	0	0	0	.333	.500	.333
11	Javier Sanoja J. Sanoja	.807	April 2025	14	44	7	15	1	0	1	7	3	0	10	1	2	48	19	2	0	1	0	0	.341	.375	.432
12	Jacob Wilson J. Wilson	.797	April 2025	24	97	13	32	6	0	2	13	2	0	6	1	0	100	44	8	1	0	0	2	.330	.343	.454
13	Griffin Conine G. Conine	.796	April 2025	15	52	8	15	7	0	0	6	7	0	18	0	1	59	22	7	0	0	0	0	.288	.373	.423
14	Edgar Quero E. Quero	.793	April 2025	13	36	3	11	2	0	0	5	6	2	4	0	0	44	13	2	0	0	0	0	.306	.432	.361
15	Liam Hicks L. Hicks	.785	April 2025	18	51	6	15	3	0	1	15	5	2	9	0	0	60	21	4	1	1	0	0	.294	.373	.412
16	Caleb Durbin C. Durbin	.750	April 2025	12	38	6	10	2	0	1	8	2	4	2	1	1	45	15	3	0	1	0	0	.263	.356	.395
17	Luisangel Acuña L. Acuña	.742	April 2025	23	65	12	20	5	0	0	3	5	0	13	6	1	70	25	5	0	0	0	3	.308	.357	.385
18	J.C. Escarra	.738	April 2025	9	24	2	5	2	0	1	3	3	1	5	0	0	28	10	3	0	0	0	0	.208	.321	.417
19	Tim Tawa T. Tawa	.729	April 2025	18	55	9	10	2	0	4	9	8	1	14	2	0	65	24	6	0	1	0	1	.182	.292	.436
20	Ryan Bliss R. Bliss	.726	April 2025	7	23	1	6	1	0	1	3	1	0	7	0	2	24	10	2	0	0	0	1	.261	.292	.435
21	Jake Mangum J. Mangum	.715	April 2025	19	61	6	19	3	0	0	5	4	0	6	6	0	65	22	3	0	0	0	2	.311	.354	.361
22	Jasson Domínguez J. Domínguez	.705	April 2025	23	84	13	20	7	0	2	12	8	1	32	3	0	93	33	9	0	0	0	1	.238	.312	.393
23	Nathan Lukes N. Lukes	.703	April 2025	14	29	4	7	1	0	1	3	3	1	3	0	1	35	11	2	1	1	0	1	.241	.324	.379
24	Eric Wagaman E. Wagaman	.702	April 2025	22	81	14	20	6	0	2	6	7	0	14	1	0	88	32	8	0	0	0	1	.247	.307	.395
25	Cam Smith C. Smith	.700	April 2025	20	67	8	15	1	1	3	10	6	1	22	1	0	74	27	5	0	0	0	1	.224	.297	.403