Mithrandir Metrics
Pitcher projection 2026 Refreshed Jul 18 06:00 AM ET
Pitcher projection / ATL · 2026

Fuentes, Didier

Run-prevention profile built on workable command

Primary
19.8% K%
Range
11.1% 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.

2026-07-18
84
Pitching
percentile
Pitching9 metrics
79
Arsenal3 metrics
70
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 preseason7.78
ERA current pace2.65
ERA rolling p505.54
Observed weight44%
ERA
3.05 4.23 5.54 6.85 8.03
FIP
2.29 2.77 3.30 3.84 4.32
K%
19.0% 21.5% 24.2% 26.9% 29.3%
BB%
5.0% 6.1% 7.2% 8.4% 9.4%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-07-18
Pitching · percentile strip
WHIP1.06
85
ERA2.65
84
BB%7.0%
76 +17 vs proj
K%28.5%
86 +55 vs proj
xwOBA allowed0.275
87 +46 vs proj
Barrel allowed6.0%
75 +39 vs proj
Fastball velo97.0
86
Hard-hit allowed37.9%
57
Whiff%25.3%
70 +23 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-07-18
Fastball Stuff+104
68
Mithrandir Stuff+105
77
Slider Stuff+104
65
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 0.275 2026-07-07: 0.2752026-07-08: 0.2792026-07-09: 0.2792026-07-10: 0.2772026-07-11: 0.2772026-07-12: 0.2762026-07-13: 0.2762026-07-14: 0.2752026-07-15: 0.2752026-07-16: 0.2752026-07-17: 0.2752026-07-18: 0.275 2026-07-07 2026-07-18 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: 39%39%Zone: 50%50%Whiff: 25%25%Called strike: 16%16%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 Fuentes, Didier · 2026 arsenal snapshot 4-Seam Fastball: 67.3%Slider: 25.4%Split-Finger: 6.8%Curveball: 0.5% FF67% · 97 mphprimary pitch FF 67%SL 25%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 15″30″45″60″ 4-Seam Fastball: 67% usage, 2″ horizontal break, 14″ drop, 97.0 mphFF97 mphSlider: 25% usage, 0″ horizontal break, 34″ drop, 86.4 mphSL86 mphSplit-Finger: 7% usage, 16″ horizontal break, 28″ drop, 89.2 mphFS89 mphCurveball: 1% 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 73.0% 332 104 qualified
SL 27.0% 123 104 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-3.77
K% Δ+0.087
Sample45.3 IP

positive regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings63.3----
Batters Faced320----
K%19.8%11.1% to 28.2%+/- 8.5%
BB%8.1%3.3% to 10.1%+/- 3.4%
Whiff%22.6%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
FIP4.413.37 to 6.21+/- 1.42
WHIP1.4301.133 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%