CHC · P
Ryan Rolison
Age 29 B/T R/L 6′2″, 213 lb USA MLB debut 2025
- The Cubs’ roster as it stands on the 40-man, off the 26-man (call-up depth)
- Trade read Available at a price: CHC 44% playoff odds; control through 2029.
Keystone Stuff 105 71st pct
2026 fWAR 0.3
Projected 2027 WAR 0.0 Keystone Marcel+ at 66 IP
Pitching · 2026 percentiles
vs. MLB pitchers with 500+ pitches · 990 pitches
63.0 IP3.14 ERA3.93 FIP 48° arm3 SV
Arsenal & Pitch Lab
Movement normalized to arm side · Keystone Stuff by pitch
| Pitch | Use | Velo | IVB | HB | Stuff | Loc | Whiff | xRV/100 |
|---|---|---|---|---|---|---|---|---|
| Four-seam40% use | 40% | 94.7 | 14.4 | +2.6 | 101 | 95 | 14% | −0.20 |
| Curveball16% use | 16% | 79.5 | −13.8 | −9.8 | 102 | 101 | 23% | −0.10 |
| Sweeper16% use | 16% | 85.1 | −0.5 | −13.4 | 111 | 103 | 35% | +1.53 |
| Sinker15% use | 15% | 95.0 | 8.9 | +12.5 | 101 | 100 | 17% | +2.44 |
| Slider13% use | 13% | 86.8 | −1.9 | −4.5 | 110 | 113 | 17% | −1.03 |
No mix change or new pitch clears its bar. The arsenal is efficient for its shapes.
Most similar pitchers
Pitches like Rolison: same hand, shape, slot and mix
| Similarity | Player | Stuff | ’26 WAR | ’27 proj | 2027 |
|---|---|---|---|---|---|
| 45 | Caleb Thielbar CHC · ’87 | 111 | −0.2 | 0.1 | Free agent |
| 40 | Erik Sabrowski CLE · ’97 | 111 | 1.2 | 0.8 | Pre-arb |
| 32 | DL Hall MIL · ’98 | 111 | 0.3 | 0.4 | Arb |
| 30 | Grant Wolfram BAL · ’96 | 104 | 1.2 | 0.7 | Pre-arb |
| 30 | Hogan Harris ATH · ’96 | 111 | 0.5 | 0.5 | 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 0.0 WAR Arbitration $1.1M*
2028 0.0 WAR Arbitration $1.4M*
2029 −0.1 WAR Arbitration $1.4M*
2030 −0.2 WAR Free agent
* projected arbitration or minimum salary. Contract Studio →
Minor leagues
MLB Stats API · public box-score data
| SeasonLevel | Level | Team | Age | G | PA / IP | PA / IP ·Line |
|---|---|---|---|---|---|---|
| 2026AAA | AAA | Iowa Cubs | 28 | 5 | 7.1 IP | 7.1 IP · 3.68 ERA · 29.7% K · 16.2% BB |
| 2025AAA | AAA | Albuquerque Isotopes | 27 | 20 | 29.2 IP | 29.2 IP · 3.34 ERA · 25.2% K · 7.1% BB |