Mithrandir Metrics
Pitcher projection 2026 Refreshed Jun 2 06:00 AM ET
Pitcher projection / LAD · 2026

Wrobleski, Justin

Run-prevention profile built on workable command

Primary
25.2% K%
Range
21.3% to 31.7%
Live Δ
yes
Team LAD Archetype Balanced reliever Age 26 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.

2026-06-02
ERA preseason4.45
ERA current pace3.07
ERA rolling p503.73
Observed weight52%
ERA
2.58 3.12 3.73 4.34 4.88
FIP
2.61 3.07 3.59 4.10 4.56
K%
18.0% 19.4% 20.9% 22.5% 23.9%
BB%
4.7% 5.5% 6.3% 7.2% 8.0%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-06-02
Pitching · percentile strip
BB%5.3%
92 +18 vs proj
Barrel allowed7.5%
55
Fastball velo93.8
39
Hard-hit allowed40.8%
41
K%17.1%
15 -54 vs proj
Whiff%17.6%
11 -18 vs proj
xwOBA allowed0.310
54
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; Arsenal Decomposition remains descriptive support under Stuff+.

2026-06-02
Mithrandir Stuff+104
65
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.

7Pitches 2026Season 51%Top usage
ride armside gloveside +Arsenal gap +Shape contrast
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 Wrobleski, Justin · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-19: 0.3132026-05-21: 0.3132026-05-23: 0.3202026-05-24: 0.3202026-05-25: 0.3202026-05-26: 0.3202026-05-28: 0.3202026-05-29: 0.3202026-05-30: 0.3202026-05-31: 0.3102026-06-01: 0.3102026-06-02: 0.310 2026-05-19 2026-06-02 xwOBA allowed MITHRANDIR · CHARTS
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 Wrobleski, Justin · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 54%54%Whiff: 18%18%Called strike: 18%18%First pitch strike: 52%52%Hard hit allowed: 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 Wrobleski, Justin · 2026 arsenal snapshot 4-Seam Fastball: 50.9%Slider: 33.8%Curveball: 5.4%Sinker: 5.2%Changeup: 3.1%Sweeper: 0.8% MIX FF 51%SL 34%CU 5%SI 5%CH 3%ST 1% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Wrobleski, Justin · 2026 arsenal snapshot FF: HB -0.2, IVB 1.3FFSL: HB 0.1, IVB 3.1SLCU: HB 0.4, IVB 4.6CUSI: HB 1.0, IVB 1.8SICH: HB -0.9, IVB 2.6CHST: HB 0.8, IVB 4.3STFC: HB 0.1, IVB 2.0FC horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 51.1% 419 106 qualified
SL 33.9% 278 101 qualified
CB 6.0% 49 102 limited sample
SI 5.0% 41 100 limited sample
CH 3.4% 28 102 limited sample
FC 0.6% 5 56 limited sample
Method note

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

Model read

Projection notes

1
templated note
Plays better against lefties right now (0.281 vs 0.303 xwOBA allowed split).
2
templated note
Home park slightly inflates the home-run risk band.
3
templated note
Primary mix entering the season: 4-Seam Fastball 30%, Slider 25%, Sinker 21%.
Live context

Current-season signal

ERA Δ-1.14
K% Δ-0.081
Sample66.7 IP

negative regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings66.4----
Batters Faced285----
K%25.2%21.3% to 31.7%+/- 5.2%
BB%7.1%4.9% to 10.8%+/- 2.9%
Whiff%20.5%18.0% to 26.4%+/- 4.2%
HR/91.430.80 to 2.08+/- 0.64
xwOBA Against0.2930.281 to 0.353+/- 0.036
Barrel% Allowed7.6%5.1% to 10.2%+/- 2.5%
ERA4.213.46 to 6.71+/- 1.63
FIP3.952.88 to 5.65+/- 1.38
WHIP1.2571.111 to 1.590+/- 0.240
Platoon / Shape
vs LHH

138 career BF

xwOBA0.281
K%24.2%
BB%5.8%
Barrel5.7%
vs RHH

318 career BF

xwOBA0.303
K%22.9%
BB%6.5%
Barrel7.1%