Joyce, 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 | 3.79 |
| ERA current pace | 2.89 |
| ERA rolling p50 | 3.67 |
| 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 | 65.2% | 45 | 108 | limited sample |
| SI | 30.4% | 21 | 85 | limited sample |
| SL | 4.3% | 3 | 114 | 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 | 31.5 | -- | -- |
| Batters Faced | 137 | -- | -- |
| K% | 23.1% | 14.6% to 29.3% | +/- 7.4% |
| BB% | 10.3% | 6.1% to 14.8% | +/- 4.4% |
| Whiff% | 24.8% | 20.3% to 33.9% | +/- 6.8% |
| HR/9 | 0.98 | 0.12 to 1.60 | +/- 0.74 |
| xwOBA Against | 0.308 | 0.228 to 0.356 | +/- 0.064 |
| Barrel% Allowed | 7.3% | 3.4% to 11.0% | +/- 3.8% |
| ERA | 3.98 | 1.18 to 6.19 | +/- 2.51 |
| FIP | 3.85 | 2.29 to 5.23 | +/- 1.47 |
| WHIP | 1.292 | 0.975 to 1.681 | +/- 0.353 |
117 career BF
| xwOBA | 0.264 |
| K% | 17.7% |
| BB% | 10.7% |
| Barrel | 6.3% |
130 career BF
| xwOBA | 0.261 |
| K% | 18.8% |
| BB% | 7.8% |
| Barrel | 6.4% |