Herget, Jimmy
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 | 3.72 |
| ERA current pace | 5.06 |
| ERA rolling p50 | 4.07 |
| 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 |
|---|---|---|---|---|
| SL | 59.6% | 171 | 108 | limited sample |
| SI | 22.6% | 65 | 101 | limited sample |
| FB | 10.1% | 29 | 80 | limited sample |
| CH | 7.7% | 22 | 84 | 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 | 38.1 | -- | -- |
| Batters Faced | 161 | -- | -- |
| K% | 23.7% | 16.5% to 29.2% | +/- 6.4% |
| BB% | 7.6% | 4.8% to 12.4% | +/- 3.8% |
| Whiff% | 24.6% | 19.8% to 29.8% | +/- 5.0% |
| HR/9 | 1.33 | 0.42 to 2.11 | +/- 0.85 |
| xwOBA Against | 0.301 | 0.259 to 0.361 | +/- 0.051 |
| Barrel% Allowed | 8.3% | 4.4% to 12.4% | +/- 4.0% |
| ERA | 4.13 | 1.92 to 5.96 | +/- 2.02 |
| FIP | 4.04 | 2.90 to 6.25 | +/- 1.68 |
| WHIP | 1.289 | 1.037 to 1.701 | +/- 0.332 |
429 career BF
| xwOBA | 0.288 |
| K% | 19.7% |
| BB% | 8.3% |
| Barrel | 8.6% |
620 career BF
| xwOBA | 0.274 |
| K% | 21.6% |
| BB% | 5.6% |
| Barrel | 7.9% |