Urena, Walbert
Run-prevention profile built on workable command
Preseason / current pace / Bayesian update
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 2.71 |
| ERA current pace | 2.58 |
| ERA rolling p50 | 2.65 |
| Observed weight | 48% |
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 |
|---|---|---|---|---|
| CH | 37.3% | 223 | 107 | qualified |
| SI | 27.8% | 166 | 95 | limited sample |
| FB | 21.1% | 126 | 95 | limited sample |
| SL | 13.9% | 83 | 102 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Current-season signal
| ERA Δ | -1.05 |
| K% Δ | +0.026 |
| Sample | 49.0 IP |
positive regression
Point projection and range
| Metric | Point | Range | Half-width |
|---|---|---|---|
| Innings | 31.5 | -- | -- |
| Batters Faced | 128 | -- | -- |
| K% | 19.0% | 6.0% to 26.2% | +/- 10.1% |
| BB% | 7.8% | 0.1% to 8.5% | +/- 4.2% |
| Whiff% | 20.8% | 3.7% to 27.6% | +/- 12.0% |
| HR/9 | 1.09 | 0.00 to 1.45 | +/- 0.72 |
| xwOBA Against | 0.284 | 0.001 to 0.295 | +/- 0.147 |
| Barrel% Allowed | 7.3% | 0.1% to 9.7% | +/- 4.8% |
| ERA | 3.63 | 0.00 to 4.82 | +/- 2.41 |
| FIP | 3.46 | 0.48 to 4.81 | +/- 2.17 |
| WHIP | 1.065 | 0.022 to 1.237 | +/- 0.608 |
2 career BF
| xwOBA | 0.004 |
| K% | 6.6% |
| BB% | 0.1% |
| Barrel | 0.1% |
4 career BF
| xwOBA | 0.004 |
| K% | 6.9% |
| BB% | 0.1% |
| Barrel | 0.1% |