Backhus, Kyle
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 | 4.10 |
| ERA current pace | 4.66 |
| ERA rolling p50 | 4.20 |
| Observed weight | 17% |
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 |
|---|---|---|---|---|
| SI | 57.1% | 92 | 108 | limited sample |
| SL | 34.2% | 55 | 98 | limited sample |
| CH | 8.7% | 14 | 91 | 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 | 34.3 | -- | -- |
| Batters Faced | 154 | -- | -- |
| K% | 19.3% | 14.4% to 26.6% | +/- 6.1% |
| BB% | 8.0% | 4.5% to 11.4% | +/- 3.4% |
| Whiff% | 19.6% | 14.7% to 25.4% | +/- 5.3% |
| HR/9 | 1.37 | 0.61 to 2.05 | +/- 0.72 |
| xwOBA Against | 0.327 | 0.296 to 0.397 | +/- 0.051 |
| Barrel% Allowed | 6.9% | 3.3% to 10.6% | +/- 3.6% |
| ERA | 4.12 | 3.20 to 7.15 | +/- 1.97 |
| FIP | 4.01 | 3.37 to 5.75 | +/- 1.19 |
| WHIP | 1.282 | 1.065 to 1.687 | +/- 0.311 |
47 career BF
| xwOBA | 0.238 |
| K% | 16.0% |
| BB% | 5.6% |
| Barrel | 4.2% |
79 career BF
| xwOBA | 0.274 |
| K% | 14.1% |
| BB% | 5.7% |
| Barrel | 5.2% |