Sisk, Evan
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 | 3.59 |
| ERA current pace | 1.56 |
| ERA rolling p50 | 3.00 |
| Observed weight | 29% |
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
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 |
|---|---|---|---|---|
| SI | 32.6% | 127 | 96 | limited sample |
| CB | 25.7% | 100 | 101 | limited sample |
| SL | 18.5% | 72 | 90 | limited sample |
| FB | 12.1% | 47 | 92 | limited sample |
| CH | 11.1% | 43 | 97 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Current-season signal
| ERA Δ | -2.13 |
| K% Δ | +0.037 |
| Sample | 23.3 IP |
Point projection and range
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 29.9 | -- | -- |
| Batters Faced | 135 | -- | -- |
| K% | 26.3% | 16.8% to 31.6% | +/- 7.4% |
| BB% | 11.0% | 4.9% to 15.2% | +/- 5.1% |
| Whiff% | 26.4% | 18.3% to 33.2% | +/- 7.5% |
| HR/9 | 1.02 | 0.00 to 1.52 | +/- 0.76 |
| xwOBA Against | 0.301 | 0.135 to 0.355 | +/- 0.110 |
| Barrel% Allowed | 7.3% | 2.3% to 10.5% | +/- 4.1% |
| ERA | 3.69 | 0.91 to 5.98 | +/- 2.54 |
| FIP | 3.59 | 1.41 to 5.24 | +/- 1.91 |
| WHIP | 1.371 | 0.934 to 1.734 | +/- 0.400 |
45 career BF
| xwOBA | 0.159 |
| K% | 22.0% |
| BB% | 8.9% |
| Barrel | 3.7% |
59 career BF
| xwOBA | 0.177 |
| K% | 19.0% |
| BB% | 8.4% |
| Barrel | 5.0% |