Mithrandir Metrics
Player Toronto Blue Jays Refreshed Jul 18 06:00 AM ET
Player profile / Toronto Blue Jays

Trey Yesavage

P · Bats/Throws R/R · 6' 4", 225 lb · Age 22

Cards
14
Modules
1
Live Δ
yes
Club Toronto Blue Jays Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2025103.2133014.0161.43
2026443.721414075.0691.16
2 Seasons543.641717089.0851.20
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.

2026-07-18
54
Pitching
percentile
Pitching9 metrics
61
Arsenal3 metrics
49
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-18
ERA preseason3.92
ERA current pace3.72
ERA rolling p503.81
Observed weight56%
ERA
2.77 3.26 3.81 4.35 4.84
FIP
3.23 3.61 4.03 4.45 4.83
K%
22.8% 24.3% 26.0% 27.7% 29.2%
BB%
9.2% 10.1% 11.1% 12.1% 13.0%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-18
Pitching · percentile strip
WHIP1.16
73
ERA3.72
57
BB%12.5%
15 -16 vs proj
K%22.2%
47 -46 vs proj
xwOBA allowed0.284
78
Barrel allowed5.5%
80 +34 vs proj
Fastball velo94.4
48
Hard-hit allowed35.3%
74
Whiff%27.5%
81 -18 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-07-18
Fastball Stuff+104
68
Mithrandir Stuff+101
45
Slider Stuff+100
36
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 Yesavage, Trey · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.284 2026-07-07: 0.2752026-07-08: 0.2752026-07-09: 0.2752026-07-10: 0.2752026-07-11: 0.2752026-07-12: 0.2752026-07-13: 0.2842026-07-14: 0.2842026-07-15: 0.2842026-07-16: 0.2842026-07-17: 0.2842026-07-18: 0.284 2026-07-07 2026-07-18 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 46%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 Yesavage, Trey · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 43%43%Whiff: 28%28%Called strike: 14%14%First pitch strike: 47%47%Hard hit allowed: 35%35% 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 Yesavage, Trey · 2026 arsenal snapshot 4-Seam Fastball: 45.8%Split-Finger: 29.5%Slider: 24.7% FF46% · 94 mphprimary pitch FF 46%FS 30%SL 25% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Yesavage, Trey · 2026 arsenal snapshot 9″18″27″36″ 4-Seam Fastball: 46% usage, 1″ horizontal break, 11″ drop, 94.4 mphFF94 mphSplit-Finger: 30% usage, 6″ horizontal break, 33″ drop, 82.9 mphFS83 mphSlider: 25% usage, 2″ horizontal break, 30″ drop, 87.8 mphSL88 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 63.3% 354 104 qualified
SL 36.7% 205 100 qualified
Method note

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

Reference layer

Current snapshot

Age22
Height6' 4"
Weight225 lb
Debut2025-09-15
Live layer

Delta / regression

ERA Δ-0.05
K% Δ-0.078

positive regression

Regression watch

Unlucky so far. Better days ahead.

0.2σ gap
wOBA-against (actual)0.289
xwOBA-against (deserved)0.284

Yesavage’s wOBA-against sits at 0.289, but the quality of contact underneath says it should be 0.284 — a gap of 0.005, 0.2 standard deviations from the MLB norm over 75 IP. The results have been worse than the process deserves; as the sample grows, expect the numbers to climb back toward the underlying level.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching142026-07-11Slider played up through SL/FF tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202630.0% K | 3.77 ERAProjection
2026-05-20 @ NYY0 ER / 8 K6.0 IP