Mithrandir Metrics
Player Arizona Diamondbacks Refreshed Sep 28 06:00 AM ET
Player profile / Arizona Diamondbacks

Dennis Santana

P · Bats/Throws R/R · 6' 2", 202 lb · Age 30

Cards
0
Modules
0
Live Δ
yes
Club Arizona Diamondbacks Position P Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024313.89620371.2691.09
2025452.187001670.1600.87
2026255.56570356.2491.43
9 Seasons17254.37332123348.13181.25
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.

2026-09-28
31
Pitching
percentile
Pitching9 metrics
38
Arsenal6 metrics
58
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-28
ERA preseason3.83
ERA current pace5.43
ERA rolling p504.66
Observed weight52%
ERA
3.22 3.90 4.66 5.42 6.11
FIP
3.59 3.96 4.37 4.77 5.14
K%
18.3% 19.9% 21.8% 23.6% 25.2%
BB%
6.5% 7.5% 8.6% 9.7% 10.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-28
Pitching · percentile strip
WHIP1.42
33
ERA5.43
18
BB%9.7%
41 -22 vs proj
K%19.7%
33 -24 vs proj
xwOBA allowed0.331
30 -24 vs proj
Barrel allowed7.8%
44
Fastball velo94.0
42
Hard-hit allowed39.4%
42
Whiff%23.2%
55
Mithrandir+

Stuff+ and arsenal context

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

2026-09-28
Mithrandir Stuff+102
53
Slider Stuff+104
70
Changeup Stuff+105
72
Cutter Stuff+107
95
Fastball Stuff+99
27
Sinker Stuff+99
28
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 Santana, Dennis · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.331 2026-09-14: 0.3302026-09-18: 0.3242026-09-19: 0.3242026-09-20: 0.3242026-09-21: 0.3242026-09-22: 0.3242026-09-23: 0.3242026-09-24: 0.3242026-09-25: 0.3242026-09-26: 0.3332026-09-27: 0.3312026-09-28: 0.331 2026-09-14 2026-09-28 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.

5Pitches 2026Season 36%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 Santana, Dennis · Aggregate zone metrics; not pitch-by-pitch locations Edge: 39%39%Zone: 46%46%Whiff: 23%23%Called strike: 16%16%First pitch strike: 47%47%Hard hit allowed: 39%39% 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 Santana, Dennis · 2026 arsenal snapshot Slider: 35.8%4-Seam Fastball: 27.0%Changeup: 14.3%Sinker: 12.4%Cutter: 10.6% SL36% · 85 mphprimary pitch SL 36%FF 27%CH 14%SI 12%FC 11% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Santana, Dennis · 2026 arsenal snapshot 9″18″27″36″ Slider: 36% usage, 0″ horizontal break, 35″ drop, 85.4 mphSL85 mph4-Seam Fastball: 27% usage, 4″ horizontal break, 16″ drop, 94.0 mphFF94 mphChangeup: 14% usage, 14″ horizontal break, 31″ drop, 87.9 mphCH88 mphSinker: 12% usage, 9″ horizontal break, 23″ drop, 93.9 mphSI94 mphCutter: 11% usage, 0″ horizontal break, 24″ drop, 89.8 mphFC90 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 36.2% 215 104 qualified
FB 31.1% 185 99 limited sample
CH 13.3% 79 105 limited sample
SI 11.4% 68 99 limited sample
FC 7.9% 47 107 limited sample
Method note

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

Reference layer

Current snapshot

Age30
Height6' 2"
Weight202 lb
Debut2018-06-01
Live layer

Delta / regression

ERA Δ+1.42
K% Δ-0.033

positive regression

Regression watch

Unlucky so far. Better days ahead.

1.1σ gap
wOBA-against (actual)0.364
xwOBA-against (deserved)0.331

Santana’s wOBA-against sits at 0.364, but the quality of contact underneath says it should be 0.331 — a gap of 0.033, 1.1 standard deviations from the MLB norm over 58 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
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202623.0% K | 4.01 ERAProjection
2026-05-20 @ STL0 ER / 1 K1.0 IP
2026-04-17 vs TB0 ER / 1 K1.0 IP
2026-04-15 vs WSH0 ER / 0 K1.0 IP
2026-04-11 @ CHC1 ER / 0 K1.0 IP
2026-04-04 vs BAL0 ER / 1 K1.0 IP