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

Burgos, Juan

Run-prevention profile built on workable command

Primary
23.3% K%
Range
12.0% to 27.9%
Live Δ
--
Team AZ Archetype Volatile contact Age 27 Status Out / inactive
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
66
Pitching
percentile
Arsenal3 metrics
66
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 preseason4.10
ERA current pace2.08
ERA rolling p503.97
Observed weight7%
ERA
1.23 2.53 3.97 5.41 6.70
FIP
2.66 3.39 4.20 5.01 5.74
K%
11.4% 14.9% 18.8% 22.7% 26.2%
BB%
4.8% 6.6% 8.6% 10.6% 12.4%
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
Cutter Stuff+107
95
Mithrandir Stuff+107
90
Sinker Stuff+96
13
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.

5Pitches 2025Season 35%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 Burgos, Juan · Aggregate zone metrics; not pitch-by-pitch locations Edge: 38%38%Zone: 53%53%Whiff: 10%10%Called strike: 11%11%First pitch strike: 24%24%Hard hit allowed: 25%25% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

Usage mix, movement map, and Stuff+ composition

2025 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.

2025
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Burgos, Juan · 2025 arsenal snapshot Cutter: 34.7%Sinker: 31.8%Sweeper: 29.3%Changeup: 2.1%Curveball: 2.1% FC35% · 92 mphprimary pitch FC 35%SI 32%ST 29%CH 2%CU 2% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Burgos, Juan · 2025 arsenal snapshot 12″24″36″48″ Cutter: 35% usage, 1″ horizontal break, 27″ drop, 91.8 mphFC92 mphSinker: 32% usage, 5″ horizontal break, 26″ drop, 95.8 mphSI96 mphSweeper: 29% usage, 7″ horizontal break, 37″ drop, 85.2 mphST85 mphChangeup: 2% usage, 17″ horizontal break, 30″ drop, 92.5 mphCH92 mphCurveball: 2% usage, 9″ horizontal break, 42″ drop, 82.7 mphCU83 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FC 34.3% 12 107 limited sample
SI 31.4% 11 96 limited sample
SL 25.7% 9 111 limited sample
FB 8.6% 3 105 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
Volume stays relief-shaped even when the bat-miss traits are strong.
2
templated note
Primary mix entering the season: Cutter 35%, Sinker 32%, Sweeper 29%.
Live context

Current-season signal

No Live State delta is available for this player yet.

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings29.5----
Batters Faced147----
K%23.3%12.0% to 27.9%+/- 7.9%
BB%9.6%5.1% to 13.3%+/- 4.1%
Whiff%24.6%15.2% to 28.8%+/- 6.8%
HR/91.460.44 to 2.24+/- 0.90
xwOBA Against0.3050.211 to 0.364+/- 0.077
Barrel% Allowed8.4%4.2% to 15.5%+/- 5.6%
ERA4.141.27 to 7.11+/- 2.92
FIP4.112.67 to 5.96+/- 1.64
WHIP1.4781.101 to 1.894+/- 0.397
Platoon / Shape
vs LHH

27 career BF

xwOBA0.229
K%13.2%
BB%8.8%
Barrel9.7%
vs RHH

49 career BF

xwOBA0.219
K%14.3%
BB%6.9%
Barrel10.6%