Newcomb, Sean
Run-prevention profile built on workable command
Preseason / current pace / Bayesian update
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 4.11 |
| ERA current pace | 2.84 |
| ERA rolling p50 | 3.62 |
| Observed weight | 39% |
Actual percentile with projection tick
100th = best in MLB.
Stuff+ and arsenal context
Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; Arsenal Decomposition remains descriptive support under Stuff+.
Arsenal optimization map
Pitch-shape context from this pitcher’s current arsenal snapshot. Hover a pitch to inspect usage, movement, and bat-missing context.
xwOBA allowed snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Aggregate zone heatmap
Aggregate zone metrics from seasonal Statcast leaderboards.
Usage mix, movement map, and Stuff+ composition
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 | 33.7% | 163 | 106 | limited sample |
| FB | 28.3% | 137 | 107 | limited sample |
| SI | 28.3% | 137 | 106 | limited sample |
| CH | 5.0% | 24 | 98 | limited sample |
| CB | 2.5% | 12 | 96 | limited sample |
| FC | 2.3% | 11 | 92 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Current-season signal
| ERA Δ | -1.15 |
| K% Δ | -0.008 |
| Sample | 36.7 IP |
positive regression
Point projection and range
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 65.0 | -- | -- |
| Batters Faced | 280 | -- | -- |
| K% | 22.4% | 17.6% to 27.1% | +/- 4.7% |
| BB% | 8.1% | 5.1% to 11.6% | +/- 3.3% |
| Whiff% | 18.7% | 15.0% to 24.1% | +/- 4.5% |
| HR/9 | 1.32 | 0.39 to 2.18 | +/- 0.90 |
| xwOBA Against | 0.322 | 0.276 to 0.347 | +/- 0.036 |
| Barrel% Allowed | 7.2% | 4.2% to 10.1% | +/- 2.9% |
| ERA | 3.99 | 2.24 to 5.60 | +/- 1.68 |
| FIP | 3.89 | 2.72 to 4.84 | +/- 1.06 |
| WHIP | 1.278 | 1.072 to 1.645 | +/- 0.286 |
687 career BF
| xwOBA | 0.283 |
| K% | 21.1% |
| BB% | 7.9% |
| Barrel | 5.9% |
1754 career BF
| xwOBA | 0.305 |
| K% | 19.8% |
| BB% | 8.1% |
| Barrel | 6.2% |