Mithrandir Metrics
Player Rochester Red Wings Refreshed Jun 1 06:00 AM ET
Player profile / Rochester Red Wings

Joey Wiemer

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

Cards
1
Modules
1
Live Δ
yes
Club Rochester Red Wings Position RF 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.

2026-06-01
xwOBA preseason0.304
xwOBA current pace0.315
xwOBA rolling p500.308
Observed weight32%
xwOBA
0.257 0.281 0.308 0.334 0.358
wOBA
0.444 0.475 0.508 0.541 0.571
ISO
0.140 0.167 0.198 0.229 0.257
K%
24.8% 27.4% 30.3% 33.2% 35.8%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Hitting · percentile strip
BB%13.7%
91 +60 vs proj
Barrel%5.9%
61
Bat speed68.0
28
Exit velocity88.6
52
Hard-hit%40.7%
53
K%29.4%
15
xBA0.375
88
xSLG0.601
75
xwOBA0.315
56 +29 vs proj
Defense · percentile strip
Outs Above Avg-1.0 · RF
20
Arm Runs0.8 · RF
Limited
Range Runs-0.6 · RF
Limited
Baserunning · percentile strip
Bolts1.0 · RF
17
Sprint Speed28.9 · RF
91
SB Success Rate100.0% · RF
Limited
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
Avoids Bad ChasesST 71.4% · rebadged research
80
Avoids Bad TakesHPT 27.5% · rebadged research
27
Correct Decisions66.3% · rebadged research
50
Mithrandir Stuff+61
2
Resists Breaking - horizontalwOBA 0.277 · borderline
71
Resists Breaking - verticalwOBA 0.258 · insufficient sample
94
Resists ChangeupwOBA 0.308 · validated thin sample
4
Resists Cutters + splitterswOBA 0.370 · insufficient sample
3
Resists FastballwOBA 0.355 · validated
25
Resists SinkerwOBA 0.381 · validated
9
SEAGER+ Plate Discipline104
67
Rolling form chart

xwOBA 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 Wiemer, Joey · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-17: 0.3002026-05-19: 0.3002026-05-21: 0.3162026-05-23: 0.3162026-05-24: 0.3162026-05-25: 0.3152026-05-26: 0.3152026-05-28: 0.3152026-05-29: 0.3152026-05-30: 0.3152026-05-31: 0.3152026-06-01: 0.315 2026-05-17 2026-06-01 xwOBA 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.

5Pitches 2026Season 51%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 Swing Zone Profile Wiemer, Joey · Aggregate zone metrics; not pitch-by-pitch locations Zone: 46%46%Chase: 26%26%Whiff: 28%28%Zone contact: 85%85%Contact: 72%72%Hard hit: 41%41% 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 Wiemer, Joey · 2026 arsenal snapshot Other: 51.2%Slider: 37.2%Curveball: 7.0%Changeup: 2.3%Eephus: 2.3% MIX FA 51%SL 37%CU 7%CH 2%EP 2% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Wiemer, Joey · 2026 arsenal snapshot FA: HB 0.4, IVB 2.3FASL: HB -0.2, IVB 5.1SLCU: HB -0.2, IVB 19.4CUCH: HB 0.9, IVB 4.8CHEP: HB -0.5, IVB 9.0EP horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 52.4% 22 75 limited sample
SL 38.1% 16 63 limited sample
CB 7.1% 3 59 limited sample
CH 2.4% 1 55 limited sample
Method note

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

Reference layer

Current snapshot

Age27
Height6' 4"
Weight226 lb
Debut2023-04-01
Live layer

Delta / regression

xwOBA Δ+0.030
wOBA Δ+0.223

negative regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Hitting12026-03-29Disciplined swing decisions drove the score
Projection links / recent games

Available detail

Hitter Projections 20260.285 xwOBA | 8 HRProjection
2026-04-17 vs SF0 HR | 0 RBI / 3 Ch | 0 E1-3 | K, R
2026-04-15 @ PIT0 HR | 0 RBI / 0 Ch | 0 E0-3 | K
2026-04-14 @ PIT0 HR | 0 RBI / 0 Ch | 0 E0-0
2026-04-13 @ PIT0 HR | 0 RBI / 0 Ch | 0 E0-1 | K
2026-04-11 @ MIL0 HR | 0 RBI / 5 Ch | 0 E0-4 | 3 K