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 | 6.26 |
| ERA rolling p50 | 5.22 |
| Observed weight | 53% |
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 | 45.7% | 375 | 104 | qualified |
| SL | 45.1% | 370 | 99 | qualified |
| FC | 5.7% | 47 | 94 | limited sample |
| FB | 3.4% | 28 | 90 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
| ERA Δ | +2.08 |
| K% Δ | -0.061 |
| Sample | 57.3 IP |
positive regression
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 145.3 | -- | -- |
| Batters Faced | 624 | -- | -- |
| K% | 21.6% | 17.7% to 27.2% | +/- 4.8% |
| BB% | 8.0% | 5.8% to 10.1% | +/- 2.1% |
| Whiff% | 21.7% | 19.1% to 26.3% | +/- 3.6% |
| HR/9 | 1.56 | 0.84 to 2.05 | +/- 0.61 |
| xwOBA Against | 0.331 | 0.287 to 0.360 | +/- 0.036 |
| Barrel% Allowed | 8.5% | 5.9% to 12.0% | +/- 3.0% |
| ERA | 4.18 | 3.07 to 5.92 | +/- 1.42 |
| FIP | 4.35 | 3.02 to 5.48 | +/- 1.23 |
| WHIP | 1.303 | 1.101 to 1.557 | +/- 0.228 |
| xwOBA | 0.334 |
| K% | 20.4% |
| BB% | 8.6% |
| Barrel | 10.8% |
| xwOBA | 0.292 |
| K% | 20.3% |
| BB% | 6.3% |
| Barrel | 6.6% |
