Mithrandir Metrics
Pitcher projection 2026 Refreshed Oct 20 06:00 AM ET
Pitcher projection / ATL · 2026

Fuentes, Didier

Run-prevention profile built on workable command

Primary
19.8% K%
Range
11.0% to 28.2%
Live Δ
yes
Team ATL Archetype Volatile contact Age 21 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.

2026-10-20
88
Pitching
percentile
Pitching9 metrics
80
Arsenal3 metrics
76
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.

Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-10-20
Pitching · percentile strip
WHIP1.04
91
ERA2.46
92
BB%6.8%
82
K%29.9%
92
xwOBA allowed0.282
84
Barrel allowed8.1%
38
Fastball velo97.3
90
Hard-hit allowed36.2%
68
Whiff%27.4%
83
Mithrandir+

Stuff+ and arsenal context

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

2026-10-20
Fastball Stuff+105
73
Mithrandir Stuff+106
82
Slider Stuff+105
73
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 67%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

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 0.314 0.282 2026-10-09: 0.2822026-10-10: 0.2822026-10-11: 0.2822026-10-12: 0.2822026-10-13: 0.2822026-10-14: 0.2822026-10-15: 0.2822026-10-16: 0.2822026-10-17: 0.2822026-10-18: 0.2822026-10-19: 0.2822026-10-20: 0.282 2026-10-09 2026-10-20 xwOBA allowed MITHRANDIR · CHARTS
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: 27%27%Called strike: 15%15%First pitch strike: 50%50%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.

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: 66.6%Slider: 25.2%Split-Finger: 7.9%Curveball: 0.3% FF67% · 97 mphprimary pitch FF 67%SL 25%FS 8%CU 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Fuentes, Didier · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 67% usage, 2″ horizontal break, 14″ drop, 97.3 mphFF97 mphSlider: 25% usage, 0″ horizontal break, 37″ drop, 85.4 mphSL85 mphSplit-Finger: 8% usage, 17″ horizontal break, 30″ drop, 88.8 mphFS89 mphCurveball: 0% usage, 14″ horizontal break, 51″ drop, 78.7 mphCU79 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 72.8% 571 105 qualified
SL 26.4% 207 105 qualified
CB 0.8% 6 94 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
Primary mix entering the season: 4-Seam Fastball 58%, Sweeper 27%, Curveball 12%.
pitcher
Live context

Current-season signal

ERA Δ--
K% Δ--
Sample87.7 IP

positive regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings65.9----
Batters Faced333----
K%19.8%11.0% to 28.2%+/- 8.6%
BB%8.1%3.3% to 10.1%+/- 3.4%
Whiff%22.4%15.1% to 28.3%+/- 6.6%
HR/91.310.66 to 2.89+/- 1.12
xwOBA Against0.3220.237 to 0.354+/- 0.058
Barrel% Allowed8.6%5.1% to 11.7%+/- 3.3%
ERA6.434.51 to 11.50+/- 3.49
FIP4.433.38 to 6.21+/- 1.41
WHIP1.4311.133 to 1.807+/- 0.337
Platoon / Shape
vs LHH

31 career BF

xwOBA0.242
K%11.0%
BB%5.1%
Barrel7.6%
vs RHH

39 career BF

xwOBA0.230
K%12.3%
BB%3.9%
Barrel8.0%