Current snapshot
| Age | 30 |
| Height | 6' 0" |
| Weight | 198 lb |
| Debut | 2018-05-13 |
P · Bats/Throws R/R · 6' 0", 198 lb · Age 30
| W | L | ERA | G | GS | SV | IP | SO | WHIP | |
|---|---|---|---|---|---|---|---|---|---|
| 2024 | 11 | 9 | 3.68 | 32 | 32 | 0 | 173.2 | 200 | 1.21 |
| 2025 | 17 | 6 | 2.70 | 33 | 33 | 0 | 176.2 | 204 | 1.08 |
| 2026 | 5 | 8 | 4.66 | 20 | 20 | 0 | 104.1 | 104 | 1.44 |
| 9 Seasons | 75 | 50 | 3.69 | 231 | 182 | 1 | 1035.1 | 1257 | 1.16 |
The headline weighs outcome stats (xwOBA, barrels); each bar averages its full strip group below. 100 = best in MLB.
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 3.49 |
| ERA current pace | 4.66 |
| ERA rolling p50 | 4.26 |
| Observed weight | 66% |
100th = best in MLB.
How nasty this pitcher's stuff grades in our pitch-level model. Missing coverage is shown explicitly.
Live snapshot series; true 50/100 PA windows require PA-level logs
Pitch-shape context from this pitcher’s current arsenal snapshot. Hover a pitch to inspect usage, movement, and bat-missing context.
Aggregate zone metrics from seasonal Statcast leaderboards.
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 | 54.8% | 667 | 103 | qualified |
| CH | 21.9% | 266 | 107 | qualified |
| CB | 15.0% | 182 | 99 | limited sample |
| SL | 8.4% | 102 | 92 | limited sample |
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
| Age | 30 |
| Height | 6' 0" |
| Weight | 198 lb |
| Debut | 2018-05-13 |
| ERA Δ | +1.21 |
| K% Δ | -0.038 |
positive regression
Peralta’s wOBA-against sits at 0.344, but the quality of contact underneath says it should be 0.303 — a gap of 0.041, 1.6 standard deviations from the MLB norm over 103 IP. The results have been worse than the process deserves; as the sample grows, expect the numbers to climb back toward the underlying level.
| Module | Cards | Latest | Signal |
|---|---|---|---|
| Pitching | 21 | 2026-07-11 | Stuff and strike quality carried the outing |
| Pitcher Projections 202626.1% K | 3.45 ERA | Projection |
| 2026-04-12 vs ATH1 ER / 6 K | 6.0 IP |
| 2026-04-07 vs AZ3 ER / 5 K | 4.2 IP |
| 2026-04-01 @ STL1 ER / 7 K | 5.1 IP |
| 2026-03-26 vs PIT4 ER / 7 K | 5.0 IP |