Weiss, Ryan
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 | 2.76 |
| ERA current pace | 7.62 |
| ERA rolling p50 | 4.54 |
| Observed weight | 37% |
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 |
|---|---|---|---|---|
| FB | 36.9% | 195 | 104 | limited sample |
| SL | 32.4% | 171 | 103 | limited sample |
| CH | 14.8% | 78 | 96 | limited sample |
| SI | 12.5% | 66 | 88 | limited sample |
| CB | 3.4% | 18 | 101 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Current-season signal
| ERA Δ | +3.46 |
| K% Δ | +0.026 |
| Sample | 26.3 IP |
Point projection and range
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 33.4 | -- | -- |
| Batters Faced | 142 | -- | -- |
| K% | 19.0% | 3.2% to 24.5% | +/- 10.7% |
| BB% | 10.3% | 0.3% to 10.2% | +/- 4.9% |
| Whiff% | 22.8% | 6.7% to 31.2% | +/- 12.2% |
| HR/9 | 1.39 | 0.00 to 1.66 | +/- 0.83 |
| xwOBA Against | 0.282 | 0.001 to 0.312 | +/- 0.155 |
| Barrel% Allowed | 7.5% | 0.1% to 9.4% | +/- 4.7% |
| ERA | 4.16 | 0.00 to 4.78 | +/- 2.39 |
| FIP | 4.09 | 0.47 to 6.06 | +/- 2.80 |
| WHIP | 1.290 | 0.125 to 1.429 | +/- 0.652 |
7 career BF
| xwOBA | 0.004 |
| K% | 5.0% |
| BB% | 3.2% |
| Barrel | 0.1% |
14 career BF
| xwOBA | 0.004 |
| K% | 5.3% |
| BB% | 2.4% |
| Barrel | 0.1% |