Mithrandir Metrics
Pitcher projection 2026 Refreshed Sep 26 06:00 AM ET
Pitcher projection / DET · 2026

Ryan, River

Run-prevention profile built on workable command

Primary
21.8% K%
Range
13.9% to 27.8%
Live Δ
--
Team DET Archetype Volatile contact Age 28 Status Healthy / active roster
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
51
Pitching
percentile
Arsenal2 metrics
51
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 preseason3.44
ERA current pace1.35
ERA rolling p503.22
Observed weight10%
ERA
1.05 2.08 3.22 4.37 5.40
FIP
1.85 2.71 3.67 4.62 5.48
K%
15.1% 18.1% 21.4% 24.7% 27.7%
BB%
4.8% 6.3% 8.0% 9.7% 11.3%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-09-26
Mithrandir+

Stuff+ and arsenal context

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

2026-09-26
Fastball Stuff+101
43
Mithrandir Stuff+103
58
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 26%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 Ryan, River · Aggregate zone metrics; not pitch-by-pitch locations Edge: 42%42%Zone: 45%45%Whiff: 33%33%Called strike: 21%21%First pitch strike: 63%63%Hard hit allowed: 29%29% 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 Ryan, River · 2026 arsenal snapshot 4-Seam Fastball: 26.4%Slider: 25.3%Changeup: 17.6%Curveball: 13.2%Cutter: 12.1%Sinker: 5.5% FF26% · 97 mphprimary pitch FF 26%SL 25%CH 18%CU 13%FC 12%SI 5% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Ryan, River · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 26% usage, 3″ horizontal break, 12″ drop, 97.0 mphFF97 mphSlider: 25% usage, 1″ horizontal break, 33″ drop, 90.7 mphSL91 mphChangeup: 18% usage, 9″ horizontal break, 29″ drop, 90.9 mphCH91 mphCurveball: 13% usage, 5″ horizontal break, 54″ drop, 83.0 mphCU83 mphCutter: 12% usage, 3″ horizontal break, 24″ drop, 93.4 mphFC93 mphSinker: 5% usage, 15″ horizontal break, 22″ drop, 94.2 mphSI94 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 32.6% 14 101 limited sample
CH 18.6% 8 92 limited sample
CB 14.0% 6 113 limited sample
FC 11.6% 5 112 limited sample
SL 11.6% 5 102 limited sample
SI 11.6% 5 92 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
Projection leans on stable run prevention more than one extreme carrying pitch trait.
Live context

Current-season signal

No Live State delta is available for this player yet.

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings65.9----
Batters Faced281----
K%21.8%13.9% to 27.8%+/- 6.9%
BB%8.7%5.2% to 12.2%+/- 3.5%
Whiff%21.7%14.7% to 27.6%+/- 6.4%
HR/91.360.11 to 1.80+/- 0.85
xwOBA Against0.3230.220 to 0.366+/- 0.073
Barrel% Allowed9.1%3.6% to 10.8%+/- 3.6%
ERA4.170.34 to 5.14+/- 2.40
FIP4.372.02 to 6.04+/- 2.01
WHIP1.3360.783 to 1.699+/- 0.458
Platoon / Shape
vs LHH

39 career BF

xwOBA0.195
K%14.1%
BB%6.9%
Barrel5.1%
vs RHH

43 career BF

xwOBA0.188
K%14.9%
BB%5.6%
Barrel5.0%