Reference layer
Current snapshot
| Age | 28 |
| Height | 6' 7" |
| Weight | 215 lb |
| Debut | 2022-09-19 |
Player profile / Iowa Cubs
Gavin Hollowell
P profile with live context, projection links, and Mithrandir card history when available.
Club Iowa Cubs
Position P
Roster Reassigned to Minors
Status Out / inactive
Rolling projection
Preseason / current pace / Bayesian update
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| ERA preseason | 3.53 |
| ERA current pace | 10.80 |
| ERA rolling p50 | 3.93 |
| Observed weight | 6% |
ERA
1.69
2.75
3.93
5.11
6.17
FIP
3.25
3.93
4.67
5.42
6.10
K%
12.2%
15.8%
19.9%
23.9%
27.5%
BB%
6.9%
8.9%
11.2%
13.4%
15.4%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Mithrandir+
Stuff+ and arsenal context
Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.
Mithrandir Stuff+110
96
Rolling form chart
xwOBA allowed snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
No chart yet
No Live State xwOBA snapshots are available for this player.
Optimization map
Arsenal optimization map
Pitch-shape context from this pitcher’s current arsenal snapshot. Hover a pitch to inspect usage, movement, and bat-missing context.
3Pitches
2025Season
45%Top usage
ride
armside
gloveside
+Arsenal gap
+Shape contrast
Zone profile
Aggregate zone heatmap
Aggregate zone metrics from seasonal Statcast leaderboards.
Pitch arsenal
Usage mix, movement map, and Stuff+ composition
2025 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 | 53.1% | 26 | 108 | limited sample |
| SL | 34.7% | 17 | 105 | limited sample |
| SI | 10.2% | 5 | 112 | limited sample |
| CH | 2.0% | 1 | 118 | limited sample |
Method note
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Live layer
Delta / regression
No Live State delta is available for this profile yet.
Mithrandir coverage
Module shelf
| Module | Cards | Latest | Signal |
|---|---|---|---|
| No Mithrandir card history is available for this player yet. | |||
Projection links / recent games
Available detail
| Pitcher Projections 202623.6% K | 3.87 ERA | Projection |
| 2026-03-18 @ AZ0 ER / 1 K | 1.0 IP |
| 2026-03-11 vs KC1 ER / 2 K | 1.0 IP |