Williams, Trevor
Run-prevention profile built on workable command
Season percentile report
The headline weighs outcome stats (xwOBA, barrels); each bar averages its full strip group below. 100 = best in MLB.
percentile
Preseason / current pace / Bayesian update
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 4.57 |
| ERA current pace | 3.93 |
| ERA rolling p50 | 4.40 |
| Observed weight | 26% |
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
No Live State xwOBA snapshots are available for this player.
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 |
|---|---|---|---|---|
| FB | 34.7% | 67 | 101 | limited sample |
| SL | 32.6% | 63 | 102 | limited sample |
| SI | 21.8% | 42 | 88 | limited sample |
| CH | 10.9% | 21 | 95 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Current-season signal
No Live State delta is available for this player yet.
Point projection and range
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 138.4 | -- | -- |
| Batters Faced | 612 | -- | -- |
| K% | 16.9% | 13.9% to 24.0% | +/- 5.1% |
| BB% | 6.3% | 4.1% to 8.4% | +/- 2.2% |
| Whiff% | 17.6% | 14.8% to 23.4% | +/- 4.3% |
| HR/9 | 1.44 | 0.90 to 2.26 | +/- 0.68 |
| xwOBA Against | 0.326 | 0.277 to 0.357 | +/- 0.040 |
| Barrel% Allowed | 8.9% | 6.5% to 11.8% | +/- 2.6% |
| ERA | 4.89 | 3.25 to 6.65 | +/- 1.70 |
| FIP | 4.52 | 3.09 to 5.54 | +/- 1.23 |
| WHIP | 1.357 | 1.160 to 1.758 | +/- 0.299 |
2216 career BF
| xwOBA | 0.317 |
| K% | 14.7% |
| BB% | 6.4% |
| Barrel | 8.2% |
2353 career BF
| xwOBA | 0.289 |
| K% | 18.7% |
| BB% | 5.1% |
| Barrel | 8.7% |