Stewart, Brock
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 | 3.13 |
| ERA current pace | 2.79 |
| ERA rolling p50 | 3.08 |
| Observed weight | 14% |
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 | 46.4% | 26 | 100 | limited sample |
| SL | 21.4% | 12 | 102 | limited sample |
| CH | 16.1% | 9 | 104 | limited sample |
| SI | 12.5% | 7 | 117 | limited sample |
| FC | 3.6% | 2 | 70 | 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 | 33.2 | -- | -- |
| Batters Faced | 142 | -- | -- |
| K% | 25.6% | 19.0% to 34.5% | +/- 7.7% |
| BB% | 9.3% | 5.1% to 13.7% | +/- 4.3% |
| Whiff% | 25.7% | 21.1% to 32.9% | +/- 5.9% |
| HR/9 | 1.14 | 0.47 to 1.89 | +/- 0.71 |
| xwOBA Against | 0.303 | 0.217 to 0.334 | +/- 0.058 |
| Barrel% Allowed | 6.2% | 1.8% to 9.4% | +/- 3.8% |
| ERA | 3.54 | 1.34 to 5.79 | +/- 2.22 |
| FIP | 3.23 | 2.37 to 5.16 | +/- 1.39 |
| WHIP | 1.210 | 0.968 to 1.636 | +/- 0.334 |
389 career BF
| xwOBA | 0.257 |
| K% | 22.9% |
| BB% | 9.2% |
| Barrel | 3.9% |
489 career BF
| xwOBA | 0.236 |
| K% | 26.2% |
| BB% | 7.3% |
| Barrel | 3.7% |