Pitcher · 2024

Joan Adon

Washington Nationals National League East

Age: 26
B/T: R/R
Height: 6' 2"
Weight: 247 lb
Number: #60

Born: August 12, 1998 in Santo Domingo, Dominican Republic
MLB debut: October 3, 2021
Salary, 2024: $740,000

dbWAR: -.2
IP: 10.2
ERA: 6.75
FIP: 5.89
K/9: 5.1
FIP−: 144

Joan Adon is a relief pitcher for the Washington Nationals. In 2024 he struck out 6 batters over 10.2 innings across 8 appearances, going 0-0. His ERA of 6.75 was 65.5% higher than the league average of 4.08. Stripping out defence, his 5.89 FIP suggests he pitched better than his ERA shows. He missed bats on 15.2% of swings (6.7% of every pitch he threw), walked 8.3% of the batters he faced and struck out 12.5%. His -0.2 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, 2024.

FIP5.89

K/95.1

WHIP1.50

WAR-.2

Platoon splits

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

Opponent batting by the side the hitter bats from, 2024. 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	21	17	7	0	2	0	.412	.450	.471	.400	0.0%
vs RHB	27	24	5	2	2	6	.208	.296	.458	.329	22.2%

Pitch sequencing

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

ShowBatter

Four-seamSinkerChangeupSliderCurveball

Select a count to see exactly what Joan Adon throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2024.


Four-Seam Fastball	34.8%	62	94.8	2,173	46.8%	6.3%
Sinker	23.6%	42	94.4	2,112	47.6%	27.8%
Changeup	19.1%	34	87.7	1,938	29.4%	14.3%
Curveball	11.8%	21	82.5	2,297	33.3%	33.3%
Slider	10.7%	19	87.0	2,116	36.8%	0.0%

Joan Adon'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.

Pitching

Standard and advanced, by season.

																			Trend
2024	8	1	10.2	0	0	0	12	8	6	4	6.75	5.89	1.50	5.1	3.4	165	144	-0.2	—

Head to head

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Joan Adon

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.