Casparius, Ben
Late-inning arm with usable miss-bat shape
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 | 3.83 |
| ERA current pace | 9.64 |
| ERA rolling p50 | 4.57 |
| Observed weight | 13% |
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 | 41.4% | 41 | 101 | limited sample |
| SL | 27.3% | 27 | 107 | limited sample |
| CB | 16.2% | 16 | 107 | limited sample |
| FC | 13.1% | 13 | 94 | limited sample |
| CH | 2.0% | 2 | 87 | 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 | 66.2 | -- | -- |
| Batters Faced | 289 | -- | -- |
| K% | 22.7% | 18.4% to 29.1% | +/- 5.3% |
| BB% | 7.1% | 5.0% to 10.9% | +/- 3.0% |
| Whiff% | 23.8% | 20.8% to 30.6% | +/- 4.9% |
| HR/9 | 1.28 | 0.56 to 1.91 | +/- 0.67 |
| xwOBA Against | 0.302 | 0.266 to 0.339 | +/- 0.036 |
| Barrel% Allowed | 7.8% | 5.0% to 10.8% | +/- 2.9% |
| ERA | 3.63 | 2.61 to 6.15 | +/- 1.77 |
| FIP | 3.84 | 2.82 to 4.91 | +/- 1.04 |
| WHIP | 1.227 | 1.053 to 1.610 | +/- 0.278 |
168 career BF
| xwOBA | 0.293 |
| K% | 19.5% |
| BB% | 7.7% |
| Barrel | 6.9% |
236 career BF
| xwOBA | 0.278 |
| K% | 19.9% |
| BB% | 5.6% |
| Barrel | 7.4% |