most strikeouts in a postseason by a single rookie pitcher

Trey Yesavage has fanned the most batters by a rookie in a postseason, with 39 strikeouts this season.

	NAME	SO	SEASON	TM	G	W	L	W%	GS	ERA	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Trey Yesavage T. Yesavage	39	2025	TOR	5	3	1	.750	5	3.46	0	0	0	26.0	17	10	10	3	10	2	0	1	103	1	13.50	3.46	3.90	1.04	37.9	9.7	1.04	.286	3.46	5.88
2	Michael Wacha M. Wacha	33	2013	STL	5	4	1	.800	5	2.64	0	0	0	30.2	16	9	9	3	12	1	0	3	119	0	9.68	3.52	2.75	0.88	27.7	10.1	0.91	.186	2.64	4.70
3	Walker Buehler W. Buehler	29	2018	LAD	4	0	1	.000	4	3.80	0	0	0	23.2	16	10	10	3	4	0	0	1	89	1	11.03	1.52	7.25	1.14	32.6	4.5	0.85	.245	3.80	6.08
4	Francisco Rodriguez F. Rodriguez	28	2002	ANA	11	5	1	.833	0	1.93	0	0	0	18.2	10	4	5	2	5	0	1	0	70	3	13.50	2.41	5.60	0.96	40.0	7.1	0.80	.229	2.41	4.82
5	Brandon Pfaadt B. Pfaadt	26	2023	ARI	5	0	1	.000	5	3.27	0	0	0	22.0	19	8	8	3	5	0	0	0	87	0	10.64	2.05	5.20	1.23	29.9	5.7	1.09	.302	3.27	7.77
6	Noah Syndergaard N. Syndergaard	26	2015	NYM	4	2	1	.667	3	3.32	0	0	0	19.0	15	7	7	0	8	0	0	1	78	1	12.32	3.79	3.25	0.00	33.3	10.3	1.21	.341	3.32	7.11
7	Livan Hernandez L. Hernandez	26	1997	FLA	5	4	0	1.000	3	3.18	1	0	0	28.1	23	10	11	4	12	0	0	0	118	1	8.26	3.81	2.17	1.27	22.0	10.2	1.24	.250	3.49	7.31
8	Tim Belcher T. Belcher	26	1988	LAD	4	3	0	1.000	4	4.88	0	0	0	24.0	22	13	14	3	10	1	0	0	102	0	9.75	3.75	2.60	1.13	25.5	9.8	1.33	.306	5.25	8.25
9	Fernando Valenzuela F. Valenzuela	26	1981	LAD	5	3	1	.750	5	2.21	2	0	0	40.2	29	10	10	2	15	0	0	4	159	1	5.75	3.32	1.73	0.44	16.4	9.4	1.08	.233	2.21	6.42
10	Jaret Wright J. Wright	25	1997	CLE	5	3	0	1.000	5	4.73	0	0	0	26.2	24	14	15	5	19	0	0	1	120	1	8.44	6.41	1.32	1.69	20.8	15.8	1.61	.268	5.06	8.10
11	Ian Anderson I. Anderson	24	2020	ATL	4	2	0	1.000	4	0.96	0	0	0	18.2	11	2	2	0	10	0	0	0	77	1	11.57	4.82	2.40	0.00	31.2	13.0	1.13	.256	0.96	5.30
12	Justin Verlander J. Verlander	23	2006	DET	4	1	2	.333	4	5.82	0	0	0	21.2	26	14	17	5	10	0	0	0	100	3	9.55	4.15	2.30	2.08	23.0	10.0	1.66	.339	7.06	10.80
13	Luis Garcia L. Garcia	21	2021	HOU	5	1	3	.250	5	8.04	0	0	0	15.2	13	14	14	3	12	0	0	1	73	0	12.06	6.89	1.75	1.72	28.8	16.4	1.60	.270	8.04	7.47
14	Brandon Woodruff B. Woodruff	20	2018	MIL	4	1	1	.500	1	2.19	0	0	0	12.1	7	3	3	0	3	2	1	1	46	0	14.59	2.19	6.67	0.00	43.5	6.5	0.81	.333	2.19	5.11
15	Mike Boddicker M. Boddicker	20	1983	BAL	2	2	0	1.000	2	0.00	2	1	0	18.0	8	0	1	0	3	2	0	0	66	0	10.00	1.50	6.67	0.00	30.3	4.5	0.61	.195	0.50	4.00
16	Trevor Rosenthal T. Rosenthal	18	2013	STL	10	1	0	1.000	0	0.00	0	0	4	11.2	4	0	0	0	3	0	9	2	40	0	13.89	2.31	6.00	0.00	45.0	7.5	0.60	.211	0.00	3.09
17	Madison Bumgarner M. Bumgarner	18	2010	SFG	4	2	0	1.000	3	2.18	0	0	0	20.2	18	5	5	1	5	1	0	1	83	0	7.84	2.18	3.60	0.44	21.7	6.0	1.11	.293	2.18	7.84
18	Dave Righetti D. Righetti	18	1981	NYY	4	3	0	1.000	3	2.12	0	0	0	17.0	17	4	4	1	7	1	0	0	74	0	9.53	3.71	2.57	0.53	24.3	9.5	1.41	.340	2.12	9.00
19	Pete Fairbanks P. Fairbanks	17	2020	TBR	9	0	0		0	3.65	0	0	3	12.1	12	5	5	3	6	0	3	1	54	3	12.41	4.38	2.83	2.19	31.5	11.1	1.46	.321	3.65	8.76
20	Daisuke Matsuzaka D. Matsuzaka	17	2007	BOS	4	2	1	.667	4	5.03	0	0	0	19.2	22	11	11	1	8	1	0	0	89	3	7.78	3.66	2.13	0.46	19.1	9.0	1.53	.339	5.03	10.07
21	Jose Contreras J. Contreras	17	2003	NYY	8	0	2	.000	0	5.73	0	0	0	11.0	11	7	7	0	7	0	3	0	50	2	13.91	5.73	2.43	0.00	34.0	14.0	1.64	.423	5.73	9.00
22	John Lackey J. Lackey	17	2002	ANA	5	2	0	1.000	3	2.42	0	0	0	22.1	21	6	6	0	6	0	0	4	90	0	6.85	2.42	2.83	0.00	18.9	6.7	1.21	.313	2.42	8.46
23	Jacob Misiorowski J. Misiorowski	16	2025	MIL	3	2	1	.667	0	1.50	0	0	0	12.0	7	2	3	1	3	0	0	0	46	0	12.00	2.25	5.33	0.75	34.8	6.5	0.83	.231	2.25	5.25
24	Cade Smith C. Smith	16	2024	CLE	9	1	0	1.000	0	3.60	0	0	0	10.0	5	4	4	1	2	0	0	0	37	0	14.40	1.80	8.00	0.90	43.2	5.4	0.70	.222	3.60	4.50
25	Ian Anderson I. Anderson	16	2021	ATL	4	2	0	1.000	4	1.59	0	0	0	17.0	9	3	3	1	7	2	0	0	68	0	8.47	3.71	2.29	0.53	23.5	10.3	0.94	.190	1.59	4.76