The Baseball Scholar

This is a list, in no particular order, of the best pitchers under 25 based solely on their 2017 performances. Players who turned 25 after June 30th and who started at least 15 games or relievers who appeared in at least 30 games are eligible.

• Luis Severino, 23



• Team: New York Yankees
• Position: SP

Luis Severino

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
67	5.3	31	31	14	6	2.98	193.1	0	0	0	73	64	51	230	10.7	1.040

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• Luis Castillo, 24



• Team: Cincinnati Reds
• Position: SP

Luis Castillo

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
71	2.5	15	15	3	7	3.12	89.1	0	0	0	32	31	32	98	9.9	1.075

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• Aaron Nola, 24



• Team: Philadelphia Phillies
• Position: SP

Aaron Nola

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
82	4.5	27	27	12	11	3.54	168	0	0	0	67	66	49	184	9.9	1.208

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• Michael Fulmer, 24



• Team: Detroit Tigers
• Position: SP

Michael Fulmer

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
86	3.6	25	25	10	12	3.83	164.2	1	0	0	80	70	40	114	6.2	1.154

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• Taijuan Walker, 24



• Team: Arizona Diamondbacks
• Position: SP

Taijuan Walker

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
76	2.7	28	28	9	9	3.49	157.1	0	0	0	76	61	61	146	8.4	1.328

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• Jordan Montgomery, 21



• Team: New York Yankees
• Position: SP

Jordan Montgomery

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
88	2.9	29	29	9	7	3.88	155.1	0	0	0	72	67	51	144	8.3	1.230

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• Dylan Bundy, 24



• Team: Baltimore Orioles
• Position: SP

Dylan Bundy

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
96	2.7	28	28	13	9	4.24	169.2	1	1	0	82	80	51	152	8.1	1.196

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• Archie Bradley, 24



• Team: Arizona Diamondbacks
• Position: RP

Archie Bradley

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
38	3.7	63	0	3	3	1.73	73	0	0	1	14	14	21	79	9.7	1.041

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• Josh Hader, 23



• Team: Milwaukee Brewers
• Position: RP

Josh Hader

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
47	1.8	35	0	2	3	2.08	47.2	0	0	0	11	11	22	68	12.8	0.986

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• Roberto Osuna, 22



• Team: Toronto Blue Jays
• Position: CL

Roberto Osuna

ERA-	WAR	G	GS	W	L	ERA	IP	CG	SHO	SV	R	ER	BB	SO	SO/9	WHIP
76	1.5	66	0	3	4	3.38	64	0	0	0	26	24	9	83	11.7	0.859

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