who holds the record for most walks for a rookie in first 12 games this season

Leo Rivas and Matt Shaw are tied for the most bases on balls by a rookie in their first 12 games this season, with 9 bases on balls.

	NAME	BB	SEASON	TM	G	AB	R	H	2B	3B	HR	RBI	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Leo Rivas L. Rivas	9	2025	SEA	12	26	8	8	0	0	0	0	0	6	3	0	35	8	0	0	0	0	0	.308	.486	.308	.793
2	Matt Shaw M. Shaw	9	2025	CHC	12	42	10	8	1	0	1	3	0	12	0	0	51	12	2	0	0	0	0	.190	.333	.286	.619
3	Kristian Campbell K. Campbell	8	2025	BOS	12	41	10	14	4	0	2	5	0	12	1	0	50	24	6	0	1	0	0	.341	.440	.585	1.025
4	Jace Jung J. Jung	7	2025	DET	12	30	5	3	0	0	0	2	0	10	0	0	37	3	0	0	0	0	1	.100	.270	.100	.370
5	Chase Meidroth C. Meidroth	7	2025	CWS	12	38	8	11	1	0	0	2	0	6	1	0	45	12	1	0	0	0	1	.289	.400	.316	.716
6	Edgar Quero E. Quero	6	2025	CWS	12	35	3	11	2	0	0	5	2	4	0	0	43	13	2	0	0	0	0	.314	.442	.371	.813
7	Tim Tawa T. Tawa	6	2025	AZ	12	33	8	8	2	0	3	8	1	8	2	0	41	19	5	0	1	0	0	.242	.366	.576	.942
8	Rafael Marchán R. Marchán	6	2025	PHI	12	31	2	4	0	0	0	2	0	7	0	0	37	4	0	0	0	0	1	.129	.270	.129	.399
9	Jonatan Clase J. Clase	5	2025	TOR	12	37	4	10	3	0	0	5	0	10	3	0	43	13	3	1	0	0	1	.270	.357	.351	.708
10	Eric Wagaman E. Wagaman	5	2025	MIA	12	43	4	10	2	0	1	3	0	5	0	0	48	15	3	0	0	0	2	.233	.313	.349	.661
11	Kyren Paris K. Paris	5	2025	LAA	12	31	13	13	1	1	5	8	1	7	4	0	37	31	7	0	0	0	1	.419	.514	1.000	1.514
12	Will Wagner W. Wagner	5	2025	TOR	12	38	3	8	2	0	0	2	0	10	0	0	44	10	2	1	0	0	0	.211	.302	.263	.565
13	Jorbit Vivas J. Vivas	4	2025	NYY	12	23	3	4	1	0	0	3	0	8	0	0	27	5	1	0	0	0	0	.174	.296	.217	.514
14	J.C. Escarra	4	2025	NYY	12	29	2	5	2	0	1	4	1	6	0	0	35	10	3	0	1	0	1	.172	.286	.345	.631
15	Mickey Gasper M. Gasper	4	2025	MIN	12	23	3	4	1	0	0	2	1	7	0	0	28	5	1	0	0	0	0	.174	.321	.217	.539
16	Carlos Narváez C. Narváez	4	2025	BOS	12	40	4	8	3	0	0	4	0	12	0	1	44	11	3	0	0	0	2	.200	.273	.275	.548
17	Nathan Lukes N. Lukes	4	2025	TOR	12	24	6	4	1	0	0	3	1	4	0	1	29	5	1	0	0	0	1	.167	.310	.208	.519
18	Griffin Conine G. Conine	4	2025	MIA	12	38	6	9	1	0	1	1	0	12	0	1	42	13	2	0	0	0	0	.237	.310	.342	.652
19	Matt Mervis M. Mervis	4	2025	MIA	12	37	6	10	0	0	5	11	0	17	0	0	42	25	5	0	1	0	0	.270	.333	.676	1.009
20	Trey Sweeney T. Sweeney	4	2025	DET	12	34	4	8	1	1	1	6	0	8	0	0	38	14	3	0	0	0	1	.235	.316	.412	.728
21	Drake Baldwin D. Baldwin	4	2025	ATL	12	42	2	10	2	0	2	6	0	10	0	0	46	18	4	0	0	0	1	.238	.304	.429	.733
22	Jasson Domínguez J. Domínguez	4	2025	NYY	12	43	7	10	3	0	1	5	1	13	2	0	48	16	4	0	0	0	0	.233	.313	.372	.685
23	Weston Wilson W. Wilson	3	2025	PHI	12	22	3	5	0	0	1	3	0	7	0	0	25	8	1	0	0	0	1	.227	.320	.364	.684
24	Nick Kurtz N. Kurtz	3	2025	ATH	12	40	2	11	0	1	0	5	0	18	0	1	45	13	1	0	2	0	2	.275	.311	.325	.636
25	Ronny Simon R. Simon	3	2025	MIA	12	28	4	6	2	0	0	2	0	4	0	0	31	8	2	0	0	0	0	.214	.290	.286	.576