CHC · P
Ryan Zeferjahn
Age 28 B/T R/R 6′5″, 209 lb USA MLB debut 2024
- The Cubs’ roster as it stands late-inning relief · 56 IP · 0.1 WAR in the role
- Trade read Available at a price: CHC 44% playoff odds; control through 2030.
Keystone Stuff 118 95th pct
2026 fWAR 0.5
Projected 2027 WAR 0.2 at 70 IP · 0.1 in his 2027 role
Pitching · 2026 percentiles
vs. MLB pitchers with 500+ pitches · 1,269 pitches
69.2 IP3.88 ERA3.82 FIP 36° arm7 SV
Arsenal & Pitch Lab
Movement normalized to arm side · Keystone Stuff by pitch
| Pitch | Use | Velo | IVB | HB | Stuff | Loc | Whiff | xRV/100 |
|---|---|---|---|---|---|---|---|---|
| Sweeper40% use | 40% | 85.5 | 5.1 | −14.8 | 125 | 107 | 38% | +1.84 |
| Four-seam33% use | 33% | 97.5 | 15.9 | +3.1 | 107 | 76 | 36% | −0.19 |
| Sinker16% use | 16% | 96.4 | 8.6 | +14.0 | 96 | 92 | 13% | +0.12 |
| Slider10% use | 10% | 88.7 | −0.2 | −6.6 | 107 | 110 | 20% | +0.82 |
| Curveball2% use | 2% | 84.3 | −7.4 | −10.4 | 104 | 53 | 45% | −1.68 |
No mix change or new pitch clears its bar. The arsenal is efficient for its shapes.
Most similar pitchers
Pitches like Zeferjahn: same hand, shape, slot and mix
| Similarity | Player | Stuff | ’26 WAR | ’27 proj | 2027 |
|---|---|---|---|---|---|
| 43 | Seranthony Domínguez SEA · ’94 | 111 | 0.0 | 0.2 | Signed $10.5M |
| 43 | Yoendrys Gómez MIN · ’99 | 115 | 0.4 | 0.3 | Pre-arb |
| 43 | Orion Kerkering PHI · ’01 | 107 | 0.3 | 0.7 | Arb |
| 43 | Bryan Abreu HOU · ’97 | 109 | −0.3 | 0.6 | Free agent |
| 43 | Matt Festa CLE · ’93 | 111 | 0.6 | 0.4 | 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
2027 0.2 WAR Pre-arb $780K*
2028 0.1 WAR Arbitration $1.6M*
2029 0.0 WAR Arbitration $1.6M*
2030 −0.1 WAR Arbitration $1.6M*
* projected arbitration or minimum salary. Contract Studio →