Players · C · Pitcher · 2026 regular season

Aroldis Chapman

Age: 38
B/T: L/L
Height: 6' 4"
Weight: 235 lb
Number: #44

Born: February 28, 1988 in Holguin, Cuba
MLB debut: August 31, 2010
Salary, 2026: $13M

Compare with…vs Garrett Crochet vs Cade Smith vs Alex Vesia

dbWAR: 23.2
IP: 51.2
ERA: 1.92
FIP: 2.50
K/9: 12.4
FIP−: 60

Aroldis Chapman is a relief pitcher for the Boston Red Sox. In 2026 he struck out 71 batters over 51.2 innings across 53 appearances, going 3-4. His ERA of 1.92 was 54.2% lower than the league average of 4.18 — the third best on his team, and 19th of 539 among MLB pitchers with 20+ innings. Stripping out defence, his 2.50 FIP suggests that his ERA had some help behind him. He missed bats on 30.4% of swings (15.8% of every pitch he threw), walked 10.8% of the batters he faced and struck out 33.3%. His 1.3 dbWAR is built from that FIP rather than runs allowed, so it credits him for what he controls and not for the defence behind him.

League context

Percentile among qualified pitchers, 2026 regular season.

FIP2.50

K/912.4

WHIP1.12

WAR1.3

WAR by season

Pitching Regular season

Standard and advanced, by season. Regular-season games only — postseason games are listed separately below.


2026	BOS	53	51.2	3	4	35	35	11	71	23	1.92	2.50	1.12	12.4	4.0	46	60	1.3
2025	BOS	67	61.1	5	3	32	28	8	85	15	1.17	1.73	0.70	12.5	2.2	28	42	2.1
2024	PIT	68	61.2	5	5	14	44	26	98	39	3.79	3.04	1.35	14.3	5.7	93	74	1.2
2023	KC/TEX	61	58.1	6	5	6	37	20	103	36	3.09	2.52	1.25	15.9	5.6	71	58	1.6
2022	NYY	43	36.1	4	4	9	24	18	43	28	4.46	4.57	1.43	10.7	6.9	112	115	-0.0
2021	NYY	61	56.1	6	4	30	36	21	97	38	3.36	3.99	1.31	15.5	6.1	79	93	0.5
2020	NYY	13	11.2	1	1	3	6	4	22	4	3.09	2.93	0.86	17.0	3.1	69	66	0.3
2019	NYY	60	57.0	3	2	37	38	14	85	25	2.21	2.28	1.11	13.4	3.9	49	51	1.7
2018	NYY	55	51.1	3	0	32	24	14	93	30	2.45	2.09	1.05	16.3	5.3	59	50	1.6
2017	NYY	52	50.1	4	3	22	37	18	69	20	3.22	2.56	1.13	12.3	3.6	74	59	1.3
2016	NYY/CHC	59	58.0	4	1	36	32	10	90	18	1.55	1.42	0.86	14.0	2.8	37	34	2.2
2015	CIN	65	66.1	4	4	33	43	12	116	33	1.63	1.94	1.15	15.7	4.5	41	49	2.1
2014	CIN	54	54.0	0	3	36	21	12	106	24	2.00	0.89	0.83	17.7	4.0	53	24	2.2
2013	CIN	68	63.2	4	5	38	37	18	112	29	2.54	2.47	1.04	15.8	4.1	66	64	1.4
2012	CIN	68	71.2	5	5	38	35	12	122	23	1.51	1.55	0.81	15.3	2.9	38	38	2.6
2011	CIN	54	50.0	4	1	1	24	20	71	41	3.60	3.29	1.30	12.8	7.4	91	83	0.7
2010	CIN	15	13.1	2	2	0	9	3	19	5	2.02	1.35	1.05	12.8	3.4	50	33	0.5

Batting Regular season

Standard and advanced, by season. Regular-season games only — postseason games are listed separately below.

																					Trend
2015	CIN	1	1	0	0	0	0	0	0	.000	.000	.000	.000	.000	0.0%	0.0%	.000	-0.3	-119	-0.0
2013	CIN	1	1	0	0	0	0	0	1	.000	.000	.000	.000	—	0.0%	100.0%	.000	-0.2	-123	-0.0

Separate from the regular season

Postseason Postseason

Wild Card through World Series. These games are counted on their own: none of them are in the regular-season tables, career totals, league context, leaderboards or dbWAR on this page.

Postseason pitching

Postseason Aroldis Chapman's postseason pitching, by October and round. Not part of any regular-season figure on this page.
Season	Team	Round	G	IP	W	L	SV	H	ER	HR	BB	SO	ERA	WHIP	K/9
2026 Post	BOS	Wild Card · through Sep 30	1	1.0	0	0	0	0	0	0	0	3	0.00	0.00	27.0
2025 Post	BOS	Wild Card	2	2.1	0	0	1	4	0	0	0	5	0.00	1.71	19.3
2023 Post	TEX	Postseason total	9	8.0	0	0	0	7	2	1	5	6	2.25	1.50	6.8
		Wild Card	1	1.0	0	0	0	0	0	0	0	1	0.00	0.00	9.0
		ALDS	2	1.2	0	0	0	1	0	0	4	2	0.00	3.00	10.8
		ALCS	4	3.2	0	0	0	4	1	1	0	1	2.45	1.09	2.5
		World Series	2	1.2	0	0	0	2	1	0	1	2	5.40	1.80	10.8
2020 Post	NYY	Postseason total	3	4.2	1	1	1	2	1	1	1	8	1.93	0.64	15.4
		Wild Card	1	2.0	1	0	0	1	0	0	0	4	0.00	0.50	18.0
		ALDS	2	2.2	0	1	1	1	1	1	1	4	3.38	0.75	13.5
2019 Post	NYY	Postseason total	5	5.1	0	1	2	2	2	1	4	9	3.38	1.13	15.2
		ALDS	2	2.2	0	0	1	1	0	0	2	4	0.00	1.13	13.5
		ALCS	3	2.2	0	1	1	1	2	1	2	5	6.75	1.13	16.9
2018 Post	NYY	Postseason total	3	3.0	0	0	0	1	0	0	1	4	0.00	0.67	12.0
		Wild Card	1	1.0	0	0	0	1	0	0	0	2	0.00	1.00	18.0
		ALDS	2	2.0	0	0	0	0	0	0	1	2	0.00	0.50	9.0
2017 Post	NYY	Postseason total	6	8.0	0	1	3	7	1	0	2	16	1.13	1.13	18.0
		Wild Card	1	1.0	0	0	0	1	0	0	0	3	0.00	1.00	27.0
		ALDS	3	5.2	0	0	2	4	0	0	2	10	0.00	1.06	15.9
		ALCS	2	1.1	0	1	1	2	1	0	0	3	6.75	1.50	20.3
2016 Post	CHC	Postseason total	13	15.2	2	0	4	11	6	1	6	21	3.45	1.09	12.1
		NLDS	4	3.1	0	0	3	3	1	0	1	7	2.70	1.20	18.9
		NLCS	4	4.2	1	0	0	3	2	0	3	3	3.86	1.29	5.8
		World Series	5	7.2	1	0	1	5	3	1	2	11	3.52	0.91	12.9
2012 Post	CIN	NLDS	3	3.0	0	0	0	2	1	0	2	3	3.00	1.33	9.0
2010 Post	CIN	NLDS	2	1.2	0	1	0	3	0	0	0	1	0.00	1.80	5.4
Career		Postseason total · 10 Octobers	47	52.2	3	4	11	39	13	4	21	76	2.22	1.14	13.0

Postseason batting

Postseason Aroldis Chapman's postseason batting, by October and round. Not part of any regular-season figure on this page.
Season	Team	Round	G	PA	AB	R	H	2B	3B	HR	RBI	BB	SO	SB	AVG	OBP	SLG	OPS
2016 Post	CHC	World Series	1	1	1	0	0	0	0	0	0	0	1	0	.000	.000	.000	.000

Box-score and rate statistics only. wOBA, wRC+, FIP and dbWAR are measured against a full league season, and a postseason is a few teams playing each other for a month, so they are not computed for October.

Platoon splits

How left- and right-handed hitters fare against him.

Season

Opponent batting by the side the hitter bats from, 2026. Counted from play-by-play, so totals can differ from the box-score season line by a plate appearance or two.
Split	PA	AB	H	HR	BB	SO	AVG	OBP	SLG	wOBA	K%
vs LHB	64	54	10	0	8	21	.185	.302	.278	.275	32.8%
vs RHB	149	133	25	3	15	50	.188	.270	.301	.262	33.6%

Pitch sequencing

What Aroldis Chapman throws in each count, and what he follows each pitch with. Select any cell for the breakdown.

ShowBatter

Four-seamSinkerSliderSplitter

Select a count to see exactly what Aroldis Chapman throws in it.

Pitch arsenal

What he throws, how hard, how often it misses, and what hitters do with it.

Season


Four-Seam Fastball	37.1%	312	96.9	2,426	47.4%	17.7%	57	.333	.956
Sinker	32.5%	273	98.0	2,455	56.8%	30.8%	67	.119	.427
Slider	18.2%	153	85.9	2,323	57.5%	47.1%	31	.129	.343
Splitter	12.2%	103	90.2	1,215	50.5%	41.3%	32	.125	.370

Aroldis Chapman's arsenal by usage. Velocity is average release speed in mph, spin in rpm, and whiff rate is misses per swing — the cleanest single measure of whether a pitch beats hitters. BAA and OPS are what hitters did against each pitch, credited to the one that ended the plate appearance, and are left blank under 15 at-bats.

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Similar players

Nearest 2026 seasons by command, run prevention and role, on rate statistics rather than totals.

Grant TaylorCWS

ERA: 2.25
FIP: 2.77
SO: 106
WAR: 1.9

Very close

Brent HeadrickNYY

ERA: 2.18
FIP: 2.46
SO: 98
WAR: 2.1

Michael PetersenMIA

ERA: 3.02
FIP: 3.13
SO: 81
WAR: 1.2

Juan MorilloAZ

ERA: 2.24
FIP: 2.71
SO: 74
WAR: 1.5

How these are computed

wOBA uses linear weights measured from this season's own play-by-play rather than published constants, and wRC+ is park-adjusted against that same league. dbWAR is our own open implementation — not fWAR or bWAR — and the full derivation, including its simplifications, is on the methodology page.