Breaking-ball driven starter profile
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 4.91 |
| ERA current pace | 8.08 |
| ERA rolling p50 | 6.42 |
| Observed weight | 48% |
100th = best in MLB.
Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; Arsenal Decomposition remains descriptive support under Stuff+.
Pitch-shape context from this pitcher’s current arsenal snapshot. Hover a pitch to inspect usage, movement, and bat-missing context.
Live snapshot series; true 50/100 PA windows require PA-level logs
Aggregate zone metrics from seasonal Statcast leaderboards.
2026 pitch-level arsenal aggregates; current season takes over after 100 tracked pitches across at least 2 pitch types. Descriptive pitch-type Stuff+ composition. Not a promoted predictive metric.
| Pitch | Usage | Pitches | Stuff+ | Status |
|---|---|---|---|---|
| FB | 26.4% | 202 | 103 | qualified |
| CB | 22.6% | 173 | 99 | limited sample |
| SL | 16.3% | 125 | 96 | limited sample |
| FC | 15.8% | 121 | 107 | limited sample |
| CH | 15.8% | 121 | 106 | limited sample |
| SI | 3.0% | 23 | 101 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
| ERA Δ | +2.67 |
| K% Δ | +0.024 |
| Sample | 45.7 IP |
positive regression
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 142.8 | -- | -- |
| Batters Faced | 629 | -- | -- |
| K% | 16.3% | 13.0% to 22.8% | +/- 4.9% |
| BB% | 6.1% | 3.7% to 7.8% | +/- 2.0% |
| Whiff% | 17.1% | 15.2% to 23.1% | +/- 3.9% |
| HR/9 | 1.74 | 0.76 to 2.16 | +/- 0.70 |
| xwOBA Against | 0.359 | 0.298 to 0.386 | +/- 0.044 |
| Barrel% Allowed | 9.0% | 6.3% to 13.0% | +/- 3.3% |
| ERA | 5.41 | 2.97 to 6.86 | +/- 1.94 |
| FIP | 4.96 | 3.41 to 6.41 | +/- 1.50 |
| WHIP | 1.430 | 1.161 to 1.725 | +/- 0.282 |
| xwOBA | 0.298 |
| K% | 18.1% |
| BB% | 5.3% |
| Barrel | 7.7% |
| xwOBA | 0.336 |
| K% | 14.9% |
| BB% | 5.1% |
| Barrel | 10.1% |
