PIT · P

Thomas Harrington

Age 25 B/T R/R 6′2″, 210 lb USA MLB debut 2025

Pittsburgh org 40-man FV 40 · #23 in org

Winter Plan on the 40-man; opens 2027 in the minors

Development · trends & plan

Tracked levels only. Monthly values; gaps mark the offseason. The number beside each line is its last month, with that month’s sample (faded under 50 PA or 150 pitches), not the season.

Plan for 2027

1
Diagnose low ask Find the cause of the drop in cutter velocity
Clear declines: cutter velocity 88.4 mph → 86.9 mph (2025 → 2026, Triple-A). Check video, medical and pitch shape before anyone sets a target.
Development Tracker

Each goal is checked when his sample can tell the target from noise: the 2027 All-Star break if it can by then, else season’s end or the sample it needs; if no single season can, it’s a lean. Coach card

Trends · MLB

Fastball velo 92.4 mph Aug ’25 · 50 pitches Apr ’25 – Aug ’25

Stuff 83 Aug ’25 · 50 pitches Apr ’25 – Aug ’25

Location 90 Aug ’25 · 50 pitches Apr ’25 – Aug ’25

Whiff rate 8% Aug ’25 · 50 pitches Apr ’25 – Aug ’25

Zone rate 50% Aug ’25 · 50 pitches Apr ’25 – Aug ’25

Walk rate 18.2% Aug ’25 · 11 PA Apr ’25 – Aug ’25

Clear changes

▼ cutter velocity 88.4 mph → 86.9 mph −1.5 mph 2025 → 2026 · Triple-A

Contract & projection

Club control (RosterResource) · Keystone projected WAR

* Estimated: RosterResource has no contract row for him, so control through 2030 estimated from his MLB debut (2025-04-01): six years of service at the earliest; he isn’t in the contract data, and time in the minors would add seasons; pre-arbitration years at the minimum, arbitration years from Keystone’s arbitration model. Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevel	Level	Team	Age	G	PA / IP	PA / IP ·Line
2026AAA	AAA	Indianapolis Indians	24	33	101.2 IP	101.2 IP · 6.02 ERA · 21.3% K · 9.1% BB
2025AAA	AAA	Indianapolis Indians	23	21	96 IP	96 IP · 5.34 ERA · 21.7% K · 8.0% BB

Prospect Pipeline: Perf+ 100 over his 2026 season (464 BF, mostly AAA), 2.7 years younger than his level; trend −1.6 since 2025 (inside the year-to-year noise). Tag: On track. MiLB Stuff 96 on 1,781 tracked AAA pitches. Prospects →

FanGraphs: FV 40 · ETA 2026. Public pitch tracking exists only at Triple-A and some Florida State League parks; where he has it, the development panel above shows it.