Kent, Zak
Late-inning arm with usable miss-bat shape
Preseason / current pace / Bayesian update
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 4.11 |
| ERA current pace | 5.79 |
| ERA rolling p50 | 4.43 |
| Observed weight | 19% |
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 | 42.5% | 71 | 100 | limited sample |
| SL | 42.5% | 71 | 96 | limited sample |
| CB | 13.8% | 23 | 103 | limited sample |
| SI | 1.2% | 2 | 54 | 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 | 145 | -- | -- |
| K% | 21.1% | 12.4% to 27.2% | +/- 7.4% |
| BB% | 9.4% | 5.4% to 13.3% | +/- 3.9% |
| Whiff% | 21.3% | 12.4% to 26.8% | +/- 7.2% |
| HR/9 | 1.06 | 0.13 to 2.04 | +/- 0.96 |
| xwOBA Against | 0.307 | 0.249 to 0.377 | +/- 0.064 |
| Barrel% Allowed | 6.0% | 0.1% to 8.0% | +/- 3.9% |
| ERA | 3.98 | 2.34 to 6.68 | +/- 2.17 |
| FIP | 3.85 | 2.85 to 5.62 | +/- 1.38 |
| WHIP | 1.352 | 1.002 to 1.630 | +/- 0.314 |
46 career BF
| xwOBA | 0.209 |
| K% | 13.7% |
| BB% | 8.5% |
| Barrel | 0.0% |
40 career BF
| xwOBA | 0.199 |
| K% | 14.2% |
| BB% | 6.1% |
| Barrel | 0.0% |