Mithrandir Metrics
Player Detroit Tigers Refreshed Jun 1 06:00 AM ET
Player profile / Detroit Tigers

Keider Montero

P profile with live context, projection links, and Mithrandir card history when available.

Cards
10
Modules
1
Live Δ
yes
Club Detroit Tigers Position P Roster Active Status Healthy / active roster
Rolling projection

Preseason / current pace / Bayesian update

Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.

2026-06-01
ERA preseason4.09
ERA current pace4.09
ERA rolling p504.09
Observed weight50%
ERA
3.07 3.55 4.09 4.63 5.12
FIP
3.69 4.02 4.39 4.76 5.09
K%
16.0% 17.3% 18.7% 20.2% 21.5%
BB%
5.2% 5.9% 6.7% 7.5% 8.2%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%6.2%
84 +17 vs proj
Barrel allowed8.8%
36
Fastball velo94.3
51
Hard-hit allowed42.9%
30
K%17.8%
18
Whiff%15.5%
5
xwOBA allowed0.294
68 +40 vs proj
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-01
Mithrandir Stuff+106
79
Rolling form chart

xwOBA allowed snapshot line

Live snapshot series; true 50/100 PA windows require PA-level logs

12 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Montero, Keider · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-17: 0.3102026-05-19: 0.3102026-05-21: 0.3052026-05-23: 0.3052026-05-24: 0.3052026-05-25: 0.3062026-05-26: 0.3062026-05-28: 0.3072026-05-29: 0.3072026-05-30: 0.3072026-05-31: 0.3072026-06-01: 0.294 2026-05-17 2026-06-01 xwOBA allowed MITHRANDIR · CHARTS
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.

6Pitches 2026Season 34%Top usage
ride armside gloveside +Arsenal gap +Shape contrast
Zone profile

Aggregate zone heatmap

Aggregate zone metrics from seasonal Statcast leaderboards.

Mithrandir Metrics ZONE HEATMAP Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Pitch Zone Profile Montero, Keider · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 54%54%Whiff: 15%15%Called strike: 18%18%First pitch strike: 48%48%Hard hit allowed: 43%43% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

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.

2026
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Montero, Keider · 2026 arsenal snapshot 4-Seam Fastball: 33.8%Sinker: 19.4%Slider: 17.2%Changeup: 15.4%Knuckle Curve: 14.1%Unknown: 0.1% MIX FF 34%SI 19%SL 17%CH 15%KC 14%UN 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Montero, Keider · 2026 arsenal snapshot FF: HB -0.2, IVB 1.2FFSI: HB 0.9, IVB 1.6SISL: HB -0.0, IVB 3.0SLCH: HB -1.1, IVB 2.3CHKC: HB 0.4, IVB 4.1KCUN: HB -1.1, IVB 9.2UN horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 33.6% 290 105 qualified
SI 19.5% 168 104 limited sample
SL 17.3% 149 105 limited sample
CH 15.4% 133 105 limited sample
CB 14.2% 122 106 limited sample
Method note

Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.

Reference layer

Current snapshot

Age25
Height6' 1"
Weight145 lb
Debut2024-05-29
Live layer

Delta / regression

ERA Δ-1.00
K% Δ-0.007

negative regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching102026-05-26Sinker played up through SI/SL tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202618.4% K | 5.08 ERAProjection
2026-04-05 vs STL2 ER / 3 K4.1 IP