Mithrandir Metrics
Player Arizona Diamondbacks Refreshed Jul 18 06:00 AM ET
Player profile / Arizona Diamondbacks

Adrian Del Castillo

DH · Bats/Throws L/R · 5' 9", 208 lb · Age 26

Cards
1
Modules
1
Live Δ
yes
Club Arizona Diamondbacks Position DH Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Swing Sim Projections
PARHHRSBAVGOBPSLGOPS
202487122541.313.368.525.893
202513192940.242.290.392.682
2026164122850.185.244.311.555
3 Seasons3823382131.234.288.387.675
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
39
Offense
percentile
Offense9 metrics
38
Defense3 metrics
53
Speed1 metrics
23
Plate skills11 metrics
53
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
xwOBA preseason0.277
xwOBA current pace0.261
xwOBA rolling p500.270
Observed weight43%
xwOBA
0.221 0.245 0.270 0.296 0.319
wOBA
0.216 0.236 0.260 0.283 0.303
ISO
0.090 0.112 0.137 0.161 0.183
K%
25.5% 27.7% 30.1% 32.5% 34.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-18
Hitting · percentile strip
Barrel%4.3%
39
Exit velocity89.2
64
Hard-hit%39.8%
53
xBA0.292
22
xSLG0.494
44
xwOBA0.261
11 -31 vs proj
BB%7.3%
35
Bat speed70.1
56
K%29.3%
17
Defense · percentile strip
Blocking Runs0.6 · C
80
Catcher Throwing-1.0 · C
22
Framing Runs0.3 · C
57
Pop Time2.0 · C
Small sample
Baserunning · percentile strip
Sprint Speed26.3 · DH
23
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
Avoids Bad ChasesST 65.2% · rebadged research
48
Avoids Bad TakesHPT 26.5% · rebadged research
36
Correct Decisions65.6% · rebadged research
44
Mithrandir Stuff+75
4
Resists Breaking - horizontalwOBA 0.254 · borderline
97
Resists Breaking - verticalwOBA 0.273 · insufficient sample
69
Resists ChangeupwOBA 0.262 · validated thin sample
91
Resists Cutters + splitterswOBA 0.324 · insufficient sample
75
Resists FastballwOBA 0.335 · validated
60
Resists SinkerwOBA 0.372 · validated
20
SEAGER+ Plate Discipline99
41
Rolling form chart

xwOBA 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 Del Castillo, Adrian · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.308 0.261 2026-07-07: 0.2612026-07-08: 0.2612026-07-09: 0.2612026-07-10: 0.2612026-07-11: 0.2612026-07-12: 0.2612026-07-13: 0.2612026-07-14: 0.2612026-07-15: 0.2612026-07-16: 0.2612026-07-17: 0.2612026-07-18: 0.261 2026-07-07 2026-07-18 xwOBA 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.

2Pitches 2026Season 56%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 Swing Zone Profile Del Castillo, Adrian · Aggregate zone metrics; not pitch-by-pitch locations Zone: 48%48%Chase: 30%30%Whiff: 26%26%Zone contact: 85%85%Contact: 74%74%Hard hit: 40%40% 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 Del Castillo, Adrian · 2026 arsenal snapshot Slider: 56.2%Curveball: 43.8% SL56% · 52 mphprimary pitch SL 56%CU 44% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Del Castillo, Adrian · 2026 arsenal snapshot 24″48″72″96″ Slider: 56% usage, 4″ horizontal break, 86″ drop, 52.1 mphSL52 mphCurveball: 44% usage, 1″ horizontal break, 93″ drop, 51.4 mphCU51 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 56.2% 9 90 limited sample
CB 43.8% 7 84 limited sample
Method note

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

Reference layer

Current snapshot

Age26
Height5' 9"
Weight208 lb
Debut2024-08-07
Live layer

Delta / regression

xwOBA Δ-0.038
wOBA Δ-0.040

positive regression

Regression watch

Unlucky so far. Better days ahead.

0.1σ gap
wOBA (actual)0.260
xwOBA (deserved)0.261

Castillo’s wOBA sits at 0.260, but the quality of contact underneath says it should be 0.261 — a gap of 0.002, 0.1 standard deviations from the MLB norm over 164 PA. 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
Hitting12026-05-09Impact contact was the main driver
Projection links / recent games

Available detail

Hitter Projections 20260.300 xwOBA | 9 HRProjection
2026-05-20 vs SF0 HR | 0 RBI / 5 Ch | 0 E0-4 | 2 K
2026-04-15 @ BAL1 HR | 5 RBI / 8 Ch | 0 E2-5 | HR, 3B, 5 RBI
2026-04-13 @ BAL0 HR | 0 RBI / 9 Ch | 1 E1-4 | K, R
2026-04-12 @ PHI0 HR | 1 RBI / 0 Ch | 0 E1-1 | RBI
2026-04-11 @ PHI0 HR | 1 RBI / 11 Ch | 0 E3-4 | RBI