Mithrandir Metrics
Player Atlanta Braves Refreshed Sep 1 06:00 AM ET
Player profile / Atlanta Braves

Didier Fuentes

P · Bats/Throws R/R · 6' 0", 170 lb · Age 21

Cards
3
Modules
1
Live Δ
yes
Club Atlanta Braves Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
20250313.8544013.0122.23
2026512.39491360.1771.13
2 Seasons544.42535373.1891.32
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.

2026-09-01
88
Pitching
percentile
Pitching9 metrics
81
Arsenal3 metrics
73
Rolling projection

Preseason / current pace / Bayesian update

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

Pending

Rolling player projection appears after current-season Statcast and projection joins refresh.

Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-01
Pitching · percentile strip
WHIP1.04
90
ERA2.51
89
BB%7.2%
74
K%31.0%
95
xwOBA allowed0.269
90
Barrel allowed7.2%
55
Fastball velo97.1
88
Hard-hit allowed35.9%
68
Whiff%27.6%
83
Mithrandir+

Stuff+ and arsenal context

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

2026-09-01
Fastball Stuff+104
67
Mithrandir Stuff+105
80
Slider Stuff+104
73
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 Fuentes, Didier · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.269 2026-08-21: 0.2692026-08-22: 0.2692026-08-23: 0.2692026-08-24: 0.2692026-08-25: 0.2652026-08-26: 0.2652026-08-27: 0.2682026-08-28: 0.2682026-08-29: 0.2682026-08-30: 0.2692026-08-31: 0.2692026-09-01: 0.269 2026-08-21 2026-09-01 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.

4Pitches 2026Season 68%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 Fuentes, Didier · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 50%50%Whiff: 28%28%Called strike: 14%14%First pitch strike: 51%51%Hard hit allowed: 36%36% 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 Fuentes, Didier · 2026 arsenal snapshot 4-Seam Fastball: 68.2%Slider: 23.8%Split-Finger: 7.4%Curveball: 0.6% FF68% · 97 mphprimary pitch FF 68%SL 24%FS 7%CU 1% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Fuentes, Didier · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 68% usage, 2″ horizontal break, 14″ drop, 97.1 mphFF97 mphSlider: 24% usage, 0″ horizontal break, 35″ drop, 85.8 mphSL86 mphSplit-Finger: 7% usage, 17″ horizontal break, 29″ drop, 89.0 mphFS89 mphCurveball: 1% usage, 12″ horizontal break, 48″ drop, 79.9 mphCU80 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 73.5% 454 104 qualified
SL 26.1% 161 104 limited sample
CB 0.5% 3 95 limited sample
Method note

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

Reference layer

Current snapshot

Age21
Height6' 0"
Weight170 lb
Debut2025-06-20
Live layer

Delta / regression

ERA Δ--
K% Δ--

positive regression

Regression watch

Unlucky so far. Better days ahead.

0.8σ gap
wOBA-against (actual)0.293
xwOBA-against (deserved)0.269

Fuentes’s wOBA-against sits at 0.293, but the quality of contact underneath says it should be 0.269 — a gap of 0.024, 0.8 standard deviations from the MLB norm over 68 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
Pitching32026-04-224-Seam Fastball played up through FF/SL tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202619.8% K | 6.47 ERAProjection
2026-03-29 vs KC1 ER / 4 K4.0 IP