Breaking-ball driven starter profile
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 3.68 |
| ERA current pace | 4.28 |
| ERA rolling p50 | 4.03 |
| 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 |
|---|---|---|---|---|
| SI | 46.8% | 454 | 103 | qualified |
| CB | 29.3% | 284 | 103 | qualified |
| CH | 19.0% | 184 | 105 | limited sample |
| SL | 4.0% | 39 | 93 | limited sample |
| FB | 0.9% | 9 | 81 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
| ERA Δ | +0.47 |
| K% Δ | -0.037 |
| Sample | 78.3 IP |
positive regression
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 147.0 | -- | -- |
| Batters Faced | 609 | -- | -- |
| K% | 21.8% | 19.1% to 28.3% | +/- 4.6% |
| BB% | 7.9% | 6.3% to 10.3% | +/- 2.0% |
| Whiff% | 23.2% | 20.6% to 28.4% | +/- 3.9% |
| HR/9 | 1.05 | 0.52 to 1.54 | +/- 0.51 |
| xwOBA Against | 0.322 | 0.285 to 0.340 | +/- 0.027 |
| Barrel% Allowed | 7.6% | 5.3% to 10.1% | +/- 2.4% |
| ERA | 3.81 | 2.87 to 5.26 | +/- 1.20 |
| FIP | 3.57 | 2.86 to 4.14 | +/- 0.64 |
| WHIP | 1.311 | 1.089 to 1.519 | +/- 0.215 |
| xwOBA | 0.272 |
| K% | 23.5% |
| BB% | 7.1% |
| Barrel | 6.2% |
| xwOBA | 0.301 |
| K% | 21.5% |
| BB% | 8.0% |
| Barrel | 6.9% |
