Pitcher · 2025

Thomas Harrington

Pittsburgh Pirates National League Central

Age: 24
B/T: R/R
Height: 6' 2"
Weight: 210 lb
Number: #53

Born: July 12, 2001 in Sanford, NC, USA
MLB debut: April 1, 2025
Drafted: 2022, round CB-A
College: Campbell

dbWAR: -.4
IP: 8.2
ERA: 15.58
FIP: 8.44
K/9: 7.3
FIP−: 203

Thomas Harrington is a relief pitcher for the Pittsburgh Pirates. In 2025 he struck out 7 batters over 8.2 innings across 3 appearances, going 0-1. His ERA of 15.58 was 274.6% higher than the league average of 4.16. Stripping out defence, his 8.44 FIP suggests he pitched better than his ERA shows. He missed bats on 20.6% of swings (10.0% of every pitch he threw), walked 14.0% of the batters he faced and struck out 14.0%. His -0.4 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, 2025.

FIP8.44

K/97.3

WHIP2.88

WAR-.4

Platoon splits

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

Opponent batting by the side the hitter bats from, 2025. 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	17	14	8	1	2	5	.571	.588	.929	.611	29.4%
vs RHB	33	28	10	2	5	2	.357	.455	.679	.479	6.1%

Pitch sequencing

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

ShowBatter

Four-seamSplitterSweeperCutterSinker

Select a count to see exactly what Thomas Harrington throws in it.

Pitch arsenal

What he throws, how hard, and how often it misses in 2025.


Four-Seam Fastball	40.5%	81	92.1	2,082	46.9%	13.3%
Splitter	23.5%	47	83.3	987	38.3%	40.0%
Sweeper	19.5%	39	81.2	2,560	35.9%	33.3%
Cutter	10.0%	20	85.6	2,394	55.0%	0.0%
Sinker	6.5%	13	91.4	2,091	53.8%	16.7%

Thomas Harrington'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
2025	3	1	8.2	0	1	1	18	15	7	7	15.58	8.44	2.88	7.3	7.3	375	203	-0.4	—

Head to head

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Thomas Harrington

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.