Isaac Mattson - Bullpen Role & Save Probability
Isaac Mattson is currently in a setup role for the Pittsburgh Pirates bullpen and remains relevant for save chances.
Last updated:
Player Type
Relief Pitcher · Pittsburgh Pirates
Bullpen Role
Setup
Usage Matrices
Sample: 2026-03-22 to 2026-04-20 (PT) · Total appearances: 13
Usage Matrix (%)
| Outs Remaining | <=-3 | -2 | -1 | tie | +1 | +2 | +3 | >=4 | Total |
|---|---|---|---|---|---|---|---|---|---|
| 10+ | - | 7.7% | - | - | 7.7% | - | - | - | 15.4% |
| 7–9 | 7.7% | 7.7% | - | - | 7.7% | 7.7% | - | - | 30.8% |
| 5–6 | - | - | 23.1%3 | 7.7% | 7.7% | - | 7.7%1 | - | 46.2% |
| 4 | - | - | - | - | - | - | - | - | - |
| <=3 | - | - | - | 7.7%2 | - | - | - | - | 7.7% |
| Total | 7.7% | 15.4% | 23.1% | 15.4% | 23.1% | 7.7% | 7.7% | - | 100.0% |
Notes
¹ most recent appearance
² second most recent appearance
³ third most recent appearance
Usage Matrix (Apps)
| Outs Remaining | <=-3 | -2 | -1 | tie | +1 | +2 | +3 | >=4 | Total |
|---|---|---|---|---|---|---|---|---|---|
| 10+ | - | 1 | - | - | 1 | - | - | - | 2 |
| 7–9 | 1 | 1 | - | - | 1 | 1 | - | - | 4 |
| 5–6 | - | - | 33 | 1 | 1 | - | 11 | - | 6 |
| 4 | - | - | - | - | - | - | - | - | - |
| <=3 | - | - | - | 12 | - | - | - | - | 1 |
| Total | 1 | 2 | 3 | 2 | 3 | 1 | 1 | - | 13 |
Notes
¹ most recent appearance
² second most recent appearance
³ third most recent appearance
Save Probability Trend
| Date (PT) | Save Probability | Model Role (Historical) |
|---|---|---|
| 2026-04-21 | 3% | Setup |
| 2026-04-19 | 4% | Setup |
| 2026-04-18 | 7% | Setup |
| 2026-04-17 | 5% | Setup |
| 2026-04-16 | 4% | Setup |
| 2026-04-15 | 0% | Setup |
| 2026-04-14 | 4% | Setup |
Team Bullpen Context
| Pitcher | Role | Save Probability |
|---|---|---|
| Dennis Santana | Co-closer | 13% |
| Gregory Soto | Co-closer | 13% |
| Isaac Mattson | Setup | 3% |
Team page: Pittsburgh Pirates Bullpen Hierarchy