Aroldis Chapman ERA in 2025

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1.172025 Regular Season

Aroldis Chapman posted a 1.17 ERA in the 2025 regular season.

• Aroldis Chapman's best regular season for ERA in 17 seasons on file.
• Down 2.62 from 3.79 in 2024.

Lowest of 17 regular seasons, 2010 through 2026. Figures come from ESPN's box scores and were last read on September 21, 2026.

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Aroldis Chapman ERA in 2025, season by season

Season↓	Team↓	GP↓iGP: Games the player appeared in, however briefly.	W↓iW: Games in which this pitcher was credited with the win.	L↓iL: Games in which this pitcher was charged with the loss.	ERA↓iERA: Earned runs allowed per nine innings pitched — lower is better. Under 3.00 is excellent.	IP↓iIP: Innings pitched. The decimal counts outs, so 6.2 is six innings and two more outs.	K↓iK: Batters this pitcher struck out.	BB↓iBB: Times the batter reached first base on four balls.	WHIP↓iWHIP: Walks and hits allowed per inning pitched — lower is better. Around 1.00 is elite.	SV↓iSV: Games finished by protecting a narrow lead to the last out.
2010	CIN	15	2	2	2.03	13.1	19	5	1.05	0
2011	CIN	54	4	1	3.60	50.0	71	41	1.30	1
2012	CIN	68	5	5	1.51	71.2	122	23	0.81	38
2013	CIN	68	4	5	2.54	63.2	112	29	1.04	38
2014	CIN	54	0	3	2.00	54.0	106	24	0.83	36
2015	CIN	65	4	4	1.63	66.1	116	33	1.15	33
2016	NYY/CHC	59	4	1	1.55	58.0	90	18	0.86	36
2017	NYY	52	4	3	3.22	50.1	69	20	1.13	22
2018	NYY	55	3	0	2.45	51.1	93	30	1.05	32
2019	NYY	60	3	2	2.21	57.0	85	25	1.11	37
2020	NYY	13	1	1	3.09	11.2	22	4	0.86	3
2021	NYY	61	6	4	3.36	56.1	97	38	1.31	30
2022	NYY	43	4	4	4.46	36.1	43	28	1.43	9
2023	KC/TEX	61	6	5	3.09	58.1	103	36	1.25	6
2024	PIT	68	5	5	3.79	61.2	98	39	1.35	14
2025	BOS	67	5	3	1.17, led the MLB	61.1	85	15	0.70, led the MLB	32
2026	BOS	52	3	4	1.95	50.2	68	23	1.14	34

What the columns mean: W · L · ERA · IP · K · BB · WHIP · SV

Bold marks the best figure in the MLB that season, among players with at least 30 games.