Mithrandir Metrics
Pitcher projection 2026 Refreshed Jun 1 06:00 AM ET
Pitcher projection / PHI · 2026

Wheeler, Zack

Bat-missing starter with frontline strikeout shape

Primary
27.5% K%
Range
21.9% to 33.7%
Live Δ
yes
Team PHI Archetype Breaking-ball attack Age 36 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 preseason3.08
ERA current pace1.67
ERA rolling p502.51
Observed weight41%
ERA
1.55 2.00 2.51 3.01 3.47
FIP
2.93 3.14 3.37 3.60 3.81
K%
22.4% 24.3% 26.3% 28.4% 30.2%
BB%
3.8% 4.5% 5.3% 6.0% 6.7%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%5.5%
91
Barrel allowed8.0%
47
Fastball velo94.9
61
Hard-hit allowed38.1%
56
K%24.4%
62 -19 vs proj
Whiff%21.8%
40 -28 vs proj
xwOBA allowed0.284
76
Mithrandir+

Stuff+ and arsenal context

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

2026-06-01
Mithrandir Stuff+108
94
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 37%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 Wheeler, Zack · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-17: 0.2992026-05-19: 0.2942026-05-21: 0.2942026-05-23: 0.2942026-05-24: 0.2842026-05-25: 0.2842026-05-26: 0.2842026-05-28: 0.2842026-05-29: 0.2842026-05-30: 0.2842026-05-31: 0.2842026-06-01: 0.284 2026-05-17 2026-06-01 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 Wheeler, Zack · Aggregate zone metrics; not pitch-by-pitch locations Edge: 39%39%Zone: 43%43%Whiff: 22%22%Called strike: 14%14%First pitch strike: 60%60%Hard hit allowed: 38%38% 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 Wheeler, Zack · 2026 arsenal snapshot 4-Seam Fastball: 37.2%Sinker: 16.9%Split-Finger: 14.0%Sweeper: 12.5%Cutter: 11.1%Curveball: 8.3% MIX FF 37%SI 17%FS 14%ST 12%FC 11%CU 8% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Wheeler, Zack · 2026 arsenal snapshot FF: HB -0.5, IVB 1.3FFSI: HB 0.8, IVB 1.9SIFS: HB -1.0, IVB 2.9FSST: HB -0.5, IVB 3.6STFC: HB -0.1, IVB 1.9FCCU: HB 1.1, IVB 4.5CU horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 43.1% 206 110 qualified
SI 20.1% 96 109 limited sample
SL 13.8% 66 103 limited sample
FC 13.8% 66 102 limited sample
CB 9.2% 44 96 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
Needs the arsenal to hold up against lefties (0.267 vs 0.239 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 41%, Sinker 17%, Sweeper 15%.
Live context

Current-season signal

ERA Δ-1.56
K% Δ-0.031
Sample43.3 IP

negative regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings146.1----
Batters Faced582----
K%27.5%21.9% to 33.7%+/- 5.9%
BB%6.2%4.2% to 8.1%+/- 1.9%
Whiff%25.7%22.6% to 30.6%+/- 4.0%
HR/91.220.93 to 1.88+/- 0.48
xwOBA Against0.2880.257 to 0.300+/- 0.022
Barrel% Allowed8.3%5.2% to 10.9%+/- 2.9%
ERA3.232.13 to 4.80+/- 1.34
FIP3.382.45 to 3.67+/- 0.61
WHIP1.0500.814 to 1.340+/- 0.263
Platoon / Shape
vs LHH

3150 career BF

xwOBA0.267
K%26.8%
BB%6.7%
Barrel9.2%
vs RHH

3137 career BF

xwOBA0.239
K%27.7%
BB%4.6%
Barrel6.1%