AZ · P
Zack Littell
Age 31 B/T R/R 6′4″, 250 lb USA MLB debut 2018
- Free agent est. 1 yr × $1.8M ($910K–$4M)
Keystone Stuff 76 1st pct
2026 fWAR −0.9
Projected 2027 WAR 0.2 Keystone Marcel+ at 151 IP
Pitching · 2026 percentiles
vs. MLB pitchers with 500+ pitches · 1,975 pitches
124.1 IP5.21 ERA6.08 FIP 39° arm
Arsenal & Pitch Lab
Movement normalized to arm side · Keystone Stuff by pitch
| Pitch | Use | Velo | IVB | HB | Stuff | Loc | Whiff | xRV/100 |
|---|---|---|---|---|---|---|---|---|
| Slider28% use | 28% | 88.2 | 10.2 | −1.5 | 83 | 101 | 19% | −1.38 |
| Four-seam25% use | 25% | 91.7 | 16.4 | +6.5 | 72 | 102 | 15% | −1.94 |
| Splitter23% use | 23% | 84.1 | 0.6 | +11.3 | 95 | 108 | 17% | −0.91 |
| Sinker14% use | 14% | 91.4 | 11.2 | +14.3 | 80 | 113 | 12% | −2.56 |
| Sweeper9% use | 9% | 79.3 | −4.3 | −12.2 | 94 | 96 | 18% | −0.01 |
No mix change or new pitch clears its bar. The arsenal is efficient for its shapes.
Most similar pitchers
Pitches like Littell: same hand, shape, slot and mix
| Similarity | Player | Stuff | ’26 WAR | ’27 proj | 2027 |
|---|---|---|---|---|---|
| 64 | Miles Mikolas WSH · ’88 | 80 | −0.9 | −0.2 | Free agent |
| 52 | Tanner Gordon COL · ’97 | 80 | 0.4 | 0.5 | — |
| 48 | Zac Gallen AZ · ’95 | 90 | −0.1 | 0.6 | Free agent |
| 47 | Simeon Woods Richardson SEA · ’00 | 87 | −0.5 | 0.7 | — |
| 40 | Tomoyuki Sugano COL · ’89 | 84 | 0.4 | −0.1 | Free agent |
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
2027 0.2 WAR Free agent
2028 0.0 WAR Free agent
2029 −0.3 WAR Free agent
2030 −0.6 WAR Free agent
A pending free agent: no club controls his 2027. Contract Studio →