Kerr, Ray
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 | 3.84 |
| ERA current pace | 2.70 |
| ERA rolling p50 | 3.72 |
| Observed weight | 10% |
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 |
|---|---|---|---|---|
| CB | 45.6% | 31 | 103 | limited sample |
| FB | 35.3% | 24 | 95 | limited sample |
| SI | 19.1% | 13 | 108 | 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 | 63.8 | -- | -- |
| Batters Faced | 288 | -- | -- |
| K% | 24.3% | 18.9% to 29.5% | +/- 5.3% |
| BB% | 6.7% | 3.8% to 10.0% | +/- 3.1% |
| Whiff% | 25.7% | 22.6% to 31.6% | +/- 4.5% |
| HR/9 | 1.66 | 0.80 to 2.18 | +/- 0.69 |
| xwOBA Against | 0.304 | 0.238 to 0.331 | +/- 0.047 |
| Barrel% Allowed | 8.6% | 5.7% to 12.1% | +/- 3.2% |
| ERA | 3.93 | 2.41 to 5.89 | +/- 1.74 |
| FIP | 3.44 | 2.34 to 3.52 | +/- 0.59 |
| WHIP | 1.294 | 1.024 to 1.581 | +/- 0.278 |
97 career BF
| xwOBA | 0.227 |
| K% | 23.8% |
| BB% | 4.9% |
| Barrel | 7.7% |
174 career BF
| xwOBA | 0.252 |
| K% | 21.2% |
| BB% | 5.0% |
| Barrel | 9.3% |