Burke, Sean
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 | 3.72 |
| ERA current pace | 3.41 |
| ERA rolling p50 | 3.51 |
| Observed weight | 67% |
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 |
|---|---|---|---|---|
| FB | 37.7% | 435 | 110 | qualified |
| CB | 21.8% | 251 | 103 | qualified |
| SL | 16.3% | 188 | 108 | limited sample |
| SI | 15.4% | 178 | 101 | limited sample |
| FC | 5.3% | 61 | 107 | limited sample |
| CH | 3.6% | 41 | 107 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Current-season signal
| ERA Δ | -1.20 |
| K% Δ | +0.028 |
| Sample | 113.3 IP |
positive regression
Point projection and range
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 71.0 | -- | -- |
| Batters Faced | 322 | -- | -- |
| K% | 23.3% | 18.0% to 29.9% | +/- 5.9% |
| BB% | 9.4% | 7.1% to 12.5% | +/- 2.7% |
| Whiff% | 24.1% | 20.3% to 29.6% | +/- 4.7% |
| HR/9 | 1.32 | 0.86 to 2.13 | +/- 0.64 |
| xwOBA Against | 0.314 | 0.282 to 0.344 | +/- 0.031 |
| Barrel% Allowed | 8.7% | 6.0% to 12.5% | +/- 3.3% |
| ERA | 4.61 | 2.45 to 5.64 | +/- 1.60 |
| FIP | 4.10 | 3.03 to 5.10 | +/- 1.03 |
| WHIP | 1.322 | 1.099 to 1.649 | +/- 0.275 |
369 career BF
| xwOBA | 0.298 |
| K% | 20.7% |
| BB% | 11.3% |
| Barrel | 9.0% |
341 career BF
| xwOBA | 0.298 |
| K% | 20.5% |
| BB% | 7.4% |
| Barrel | 9.5% |