Eisert, Brandon
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 | 4.37 |
| ERA current pace | 5.00 |
| ERA rolling p50 | 4.50 |
| Observed weight | 20% |
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 | 43.5% | 84 | 99 | limited sample |
| CH | 25.9% | 50 | 93 | limited sample |
| SL | 23.3% | 45 | 98 | limited sample |
| SI | 7.3% | 14 | 90 | 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 | 62.8 | -- | -- |
| Batters Faced | 282 | -- | -- |
| K% | 23.4% | 16.3% to 27.5% | +/- 5.6% |
| BB% | 8.2% | 5.3% to 12.0% | +/- 3.4% |
| Whiff% | 28.6% | 22.9% to 34.2% | +/- 5.7% |
| HR/9 | 1.50 | 0.77 to 2.59 | +/- 0.91 |
| xwOBA Against | 0.299 | 0.255 to 0.345 | +/- 0.045 |
| Barrel% Allowed | 8.4% | 5.0% to 13.6% | +/- 4.3% |
| ERA | 4.16 | 2.07 to 6.28 | +/- 2.10 |
| FIP | 4.11 | 2.80 to 6.03 | +/- 1.62 |
| WHIP | 1.328 | 1.107 to 1.789 | +/- 0.341 |
169 career BF
| xwOBA | 0.282 |
| K% | 20.3% |
| BB% | 6.6% |
| Barrel | 10.1% |
201 career BF
| xwOBA | 0.307 |
| K% | 20.0% |
| BB% | 9.1% |
| Barrel | 10.9% |