Breaking-ball driven starter profile
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 4.05 |
| ERA current pace | 4.38 |
| ERA rolling p50 | 4.24 |
| Observed weight | 58% |
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 |
|---|---|---|---|---|
| SL | 35.0% | 368 | 94 | qualified |
| FB | 28.3% | 297 | 102 | qualified |
| CH | 23.5% | 247 | 107 | qualified |
| SI | 13.2% | 139 | 111 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
| ERA Δ | +0.36 |
| K% Δ | +0.011 |
| Sample | 75.7 IP |
positive regression
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 75.3 | -- | -- |
| Batters Faced | 318 | -- | -- |
| K% | 25.9% | 21.7% to 33.1% | +/- 5.7% |
| BB% | 7.3% | 5.6% to 10.1% | +/- 2.3% |
| Whiff% | 27.3% | 24.7% to 33.5% | +/- 4.4% |
| HR/9 | 1.15 | 0.75 to 1.79 | +/- 0.52 |
| xwOBA Against | 0.314 | 0.261 to 0.321 | +/- 0.030 |
| Barrel% Allowed | 8.4% | 6.2% to 11.3% | +/- 2.5% |
| ERA | 4.02 | 3.00 to 5.81 | +/- 1.41 |
| FIP | 3.21 | 2.68 to 5.24 | +/- 1.28 |
| WHIP | 1.233 | 1.062 to 1.507 | +/- 0.223 |
| xwOBA | 0.248 |
| K% | 29.9% |
| BB% | 5.7% |
| Barrel | 6.1% |
| xwOBA | 0.293 |
| K% | 23.5% |
| BB% | 7.4% |
| Barrel | 8.6% |
