Maxwell, Zach
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 | 3.44 |
| ERA current pace | 27.00 |
| ERA rolling p50 | 6.13 |
| Observed weight | 11% |
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 | 57.7% | 41 | 105 | limited sample |
| SL | 26.8% | 19 | 98 | limited sample |
| FC | 15.5% | 11 | 103 | 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 | 30.3 | -- | -- |
| Batters Faced | 130 | -- | -- |
| K% | 26.1% | 16.0% to 33.2% | +/- 8.6% |
| BB% | 9.7% | 4.2% to 12.8% | +/- 4.3% |
| Whiff% | 27.3% | 18.3% to 35.5% | +/- 8.6% |
| HR/9 | 1.44 | 0.49 to 2.27 | +/- 0.89 |
| xwOBA Against | 0.281 | 0.130 to 0.331 | +/- 0.100 |
| Barrel% Allowed | 7.7% | 2.3% to 10.7% | +/- 4.2% |
| ERA | 3.83 | 0.82 to 5.68 | +/- 2.43 |
| FIP | 3.93 | 2.14 to 5.85 | +/- 1.86 |
| WHIP | 1.335 | 0.677 to 1.578 | +/- 0.451 |
18 career BF
| xwOBA | 0.163 |
| K% | 18.9% |
| BB% | 6.5% |
| Barrel | 4.4% |
29 career BF
| xwOBA | 0.160 |
| K% | 19.1% |
| BB% | 5.1% |
| Barrel | 4.5% |