Mithrandir Metrics
Player PHI Refreshed Sep 26 06:00 AM ET
Player profile / PHI

Kyle Backhus

Player · Bats/Throws L/L · 6' 4", 185 lb · Age 28

Cards
1
Modules
1
Live Δ
yes
Club PHI Position -- Roster profile Status Out / inactive
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2025034.62320225.1221.42
2026214.95211020.0201.55
2 Seasons244.76531245.1421.48
At a glance

Season percentile report

The headline weighs outcome stats (xwOBA, barrels); each bar averages its full strip group below. 100 = best in MLB.

2026-09-26
45
Pitching
percentile
Pitching9 metrics
46
Arsenal4 metrics
54
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-26
ERA preseason4.11
ERA current pace4.95
ERA rolling p504.36
Observed weight30%
ERA
2.86 3.57 4.36 5.15 5.86
FIP
3.26 3.69 4.17 4.64 5.07
K%
14.9% 17.1% 19.4% 21.8% 24.0%
BB%
4.6% 5.8% 7.1% 8.5% 9.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-26
Pitching · percentile strip
WHIP1.55
18
ERA4.95
28
BB%5.8%
91 +29 vs proj
K%19.4%
32
xwOBA allowed0.308
57 +24 vs proj
Barrel allowed4.1%
93 +35 vs proj
Fastball velo90.7
6
Hard-hit allowed33.8%
83
Whiff%17.3%
9
Mithrandir+

Stuff+ and arsenal context

How nasty this pitcher's stuff grades in our pitch-level model. Missing coverage is shown explicitly.

2026-09-26
Changeup Stuff+95
13
Mithrandir Stuff+106
85
Sinker Stuff+108
87
Slider Stuff+99
30
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 Backhus, Kyle · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.308 2026-09-12: 0.3082026-09-13: 0.3082026-09-14: 0.3082026-09-18: 0.3082026-09-19: 0.3082026-09-20: 0.3082026-09-21: 0.3082026-09-22: 0.3082026-09-23: 0.3082026-09-24: 0.3082026-09-25: 0.3082026-09-26: 0.308 2026-09-12 2026-09-26 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.

3Pitches 2026Season 57%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 Backhus, Kyle · Aggregate zone metrics; not pitch-by-pitch locations Edge: 39%39%Zone: 50%50%Whiff: 17%17%Called strike: 22%22%First pitch strike: 51%51%Hard hit allowed: 34%34% 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.

Watch the pitches in 3D →

2026
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Backhus, Kyle · 2026 arsenal snapshot Sinker: 57.4%Sweeper: 32.8%Changeup: 9.8% SI57% · 91 mphprimary pitch SI 57%ST 33%CH 10% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Backhus, Kyle · 2026 arsenal snapshot 12″24″36″48″ Sinker: 57% usage, 4″ horizontal break, 32″ drop, 90.7 mphSI91 mphSweeper: 33% usage, 0″ horizontal break, 42″ drop, 78.3 mphST78 mphChangeup: 10% usage, 14″ horizontal break, 40″ drop, 80.3 mphCH80 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 58.8% 143 108 limited sample
SL 33.3% 81 99 limited sample
CH 7.8% 19 95 limited sample
Method note

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

Reference layer

Current snapshot

MLB bio context is unavailable.
Live layer

Delta / regression

ERA Δ+0.87
K% Δ+0.002
Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching12026-04-22Stuff and strike quality carried the outing
Projection links / recent games

Available detail

Pitcher Projections 202619.3% K | 4.08 ERAProjection