Jack Flaherty
- Free agent est. 2 yr × $10.8M ($4M–$21M) · +1.0 wins to Pittsburgh’s Winter Plan as rotation depth
- Injured list 2026: Right flexor inflammation (Jul 21–Sep 27)
Pitching · 2026 percentiles
vs. MLB pitchers with 500+ pitches · 1,658 pitches
Arsenal & Pitch Lab
Movement normalized to arm side · Keystone Stuff by pitch
| Pitch | Use | Velo | IVB | HB | Stuff | Loc | Whiff | xRV/100 |
|---|---|---|---|---|---|---|---|---|
| Four-seam49% use | 49% | 92.7 | 16.1 | +5.8 | 108 | 100 | 21% | 0.00 |
| Slider24% use | 24% | 85.0 | 3.4 | −5.8 | 100 | 112 | 32% | −0.40 |
| Knuckle curve19% use | 19% | 78.1 | −9.3 | −10.9 | 99 | 90 | 38% | −0.54 |
| Sinker4% use | 4% | 90.9 | 9.5 | +13.7 | 83 | 61 | 24% | −0.92 |
| Changeup3% use | 3% | 85.5 | 8.1 | +14.5 | 79 | 60 | 25% | −2.13 |
Built from his own fastball (92.7 mph) plus the typical shape 21 pitchers with his slot (28°) throw: a sweeper around 81.9 mph, 6.4″ rise, −19.0″ arm-side. On the same model it grades +17 against his knuckle curve, the pitch with the same job (+12 to +21 across the production and three cross-fit models), about 116 on his knuckle curve’s scale; the comps’ own sweepers grade 107 at the median, so that sits above 100% of them. That would out-grade 100% of the comps’ real pitches, more likely a result of how the pitch was built than of the pitch, so it isn’t queued.
Most similar pitchers
Pitches like Flaherty: same hand, shape, slot and mix
| Similarity | Player | Stuff | ’26 WAR | ’27 proj | 2027 |
|---|---|---|---|---|---|
| 56 | Max Scherzer TOR · ’84 | 97 | 0.3 | 0.1 | Free agent |
| 52 | Cristian Javier HOU · ’97 | 101 | 0.3 | 0.7 | Signed $21.4M |
| 51 | Reynaldo López ATL · ’94 | 94 | 0.6 | 1.0 | Signed $8.0M |
| 49 | Zebby Matthews MIN · ’00 | 92 | 0.7 | 1.1 | — |
| 48 | Emmet Sheehan LAD · ’99 | 104 | 1.6 | 2.1 | Arb |
Same-handed pitchers nearest on fastball velocity and shape, arm angle, extension, pitch mix, secondary shapes, Stuff, whiff rate and workload. 2026 regulars only.
Pitch locations · 2026
Where each pitch finishes, by batter side
Where each pitch finishes, catcher’s view. The bar marks the batter’s side; the box is an average strike zone. Pitches with 40+ thrown to this side.
Contract & projection
Club control (RosterResource) · Keystone projected WAR
A pending free agent: no club controls his 2027. Contract Studio →
Minor leagues
MLB Stats API · public box-score data
| SeasonLevel | Level | Team | Age | G | PA / IP | PA / IP ·Line |
|---|---|---|---|---|---|---|
| 2026AA | AA | Erie SeaWolves | 30 | 1 | 5.2 IP | 5.2 IP · 3.18 ERA · 31.8% K · 4.5% BB |
| 2026AAA | AAA | Toledo Mud Hens | 30 | 2 | 3.2 IP | 3.2 IP · 0.00 ERA · 31.3% K · 6.3% BB |