Breaking-ball driven starter profile
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 4.06 |
| ERA current pace | 3.55 |
| ERA rolling p50 | 3.78 |
| Observed weight | 56% |
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 | 41.8% | 411 | 108 | qualified |
| SI | 26.4% | 260 | 104 | qualified |
| SL | 21.7% | 214 | 113 | qualified |
| CH | 7.5% | 74 | 105 | limited sample |
| CB | 2.5% | 25 | 97 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
| ERA Δ | -0.76 |
| K% Δ | +0.036 |
| Sample | 72.3 IP |
positive regression
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 72.2 | -- | -- |
| Batters Faced | 325 | -- | -- |
| K% | 22.8% | 18.9% to 30.8% | +/- 5.9% |
| BB% | 8.2% | 6.0% to 11.2% | +/- 2.6% |
| Whiff% | 22.0% | 19.6% to 28.3% | +/- 4.4% |
| HR/9 | 1.46 | 0.86 to 2.16 | +/- 0.65 |
| xwOBA Against | 0.326 | 0.279 to 0.359 | +/- 0.040 |
| Barrel% Allowed | 8.9% | 5.8% to 13.7% | +/- 4.0% |
| ERA | 4.31 | 2.98 to 6.34 | +/- 1.68 |
| FIP | 4.08 | 2.98 to 5.17 | +/- 1.10 |
| WHIP | 1.322 | 1.137 to 1.680 | +/- 0.271 |
| xwOBA | 0.317 |
| K% | 19.4% |
| BB% | 9.7% |
| Barrel | 10.9% |
| xwOBA | 0.292 |
| K% | 24.3% |
| BB% | 6.1% |
| Barrel | 10.4% |
