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

Alexander, Jason

Run-prevention profile built on workable command

Primary
19.0% K%
Range
14.0% to 22.3%
Live Δ
--
Team HOU Archetype Balanced starter Age 33 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
ERA preseason4.44
ERA current pace9.33
ERA rolling p505.70
Observed weight26%
ERA
4.35 4.99 5.70 6.42 7.06
FIP
4.25 4.67 5.14 5.61 6.03
K%
15.1% 16.7% 18.4% 20.2% 21.8%
BB%
5.6% 6.5% 7.6% 8.7% 9.6%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-06-01
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+100
34
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 35%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

0 snapshots
No chart yet

No Live State xwOBA snapshots are available for this player.

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 Alexander, Jason · Aggregate zone metrics; not pitch-by-pitch locations Edge: 40%40%Zone: 51%51%Whiff: 19%19%Called strike: 18%18%First pitch strike: 52%52%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 Alexander, Jason · 2026 arsenal snapshot Changeup: 35.1%Sinker: 23.4%4-Seam Fastball: 23.1%Cutter: 7.4%Sweeper: 6.0%Slider: 5.0% MIX CH 35%SI 23%FF 23%FC 7%ST 6%SL 5% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Alexander, Jason · 2026 arsenal snapshot CH: HB -0.9, IVB 3.3CHSI: HB 0.4, IVB 2.6SIFF: HB -0.7, IVB 1.7FFFC: HB 0.2, IVB 2.6FCST: HB -0.8, IVB 3.7STSL: HB 0.1, IVB 2.9SL horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
CH 35.1% 105 101 limited sample
SI 23.4% 70 97 limited sample
FB 23.1% 69 104 limited sample
SL 11.0% 33 103 limited sample
FC 7.4% 22 100 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 (0.288 vs 0.263 xwOBA allowed split).
2
templated note
Primary mix entering the season: Sinker 40%, Changeup 33%, Sweeper 16%.
Live context

Current-season signal

No Live State delta is available for this player yet.

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings68.3----
Batters Faced298----
K%19.0%14.0% to 22.3%+/- 4.1%
BB%7.1%5.2% to 9.9%+/- 2.3%
Whiff%20.8%17.7% to 25.0%+/- 3.6%
HR/91.601.03 to 2.44+/- 0.70
xwOBA Against0.3380.287 to 0.367+/- 0.040
Barrel% Allowed8.5%5.7% to 11.0%+/- 2.7%
ERA4.853.12 to 6.57+/- 1.72
FIP4.683.73 to 5.99+/- 1.13
WHIP1.3171.021 to 1.647+/- 0.313
Platoon / Shape
vs LHH

346 career BF

xwOBA0.288
K%14.1%
BB%7.0%
Barrel7.9%
vs RHH

348 career BF

xwOBA0.263
K%15.8%
BB%5.4%
Barrel6.8%