Mithrandir Metrics
Player Seattle Mariners Refreshed Jun 1 06:00 AM ET
Player profile / Seattle Mariners

José A. Ferrer

P profile with live context, projection links, and Mithrandir card history when available.

Cards
0
Modules
0
Live Δ
yes
Club Seattle Mariners Position P Roster Active Status Healthy / active roster
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-01
ERA preseason3.69
ERA current pace1.80
ERA rolling p503.04
Observed weight34%
ERA
1.28 2.11 3.04 3.97 4.80
FIP
2.33 2.82 3.35 3.89 4.37
K%
17.4% 19.8% 22.4% 25.0% 27.4%
BB%
2.6% 3.8% 5.1% 6.5% 7.7%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Pitching · percentile strip
BB%4.0%
97
Barrel allowed2.3%
98 +26 vs proj
Fastball velo97.0
88
Hard-hit allowed35.2%
74
K%22.2%
50
Whiff%23.3%
52
xwOBA allowed0.241
96 +18 vs proj
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-01
Mithrandir Stuff+108
94
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 Ferrer, José A. · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 2026-05-17: 0.2592026-05-19: 0.2592026-05-21: 0.2482026-05-23: 0.2442026-05-24: 0.2442026-05-25: 0.2442026-05-26: 0.2442026-05-28: 0.2412026-05-29: 0.2412026-05-30: 0.2412026-05-31: 0.2412026-06-01: 0.241 2026-05-17 2026-06-01 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.

4Pitches 2026Season 64%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 Ferrer, José A. · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 54%54%Whiff: 23%23%Called strike: 15%15%First pitch strike: 55%55%Hard hit allowed: 35%35% 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 Ferrer, José A. · 2026 arsenal snapshot Sinker: 64.2%Changeup: 17.9%Slider: 17.7%4-Seam Fastball: 0.2% MIX SI 64%CH 18%SL 18%FF 0% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Ferrer, José A. · 2026 arsenal snapshot SI: HB 0.0, IVB 1.9SICH: HB -1.3, IVB 2.7CHSL: HB -0.0, IVB 3.0SLFF: HB -1.5, IVB 1.9FF horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SI 64.3% 241 111 qualified
CH 19.5% 73 94 limited sample
SL 16.0% 60 98 limited sample
FB 0.3% 1 117 limited sample
Method note

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

Reference layer

Current snapshot

Age26
Height6' 1"
Weight233 lb
Debut2023-07-01
Live layer

Delta / regression

ERA Δ-1.94
K% Δ-0.003
Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Pitcher Projections 202622.5% K | 3.74 ERAProjection
2026-05-20 vs CWS1 ER / 3 K1.0 IP
2026-04-20 vs ATH0 ER / 0 K1.0 IP
2026-04-17 vs TEX1 ER / 1 K0.2 IP
2026-04-15 @ SD0 ER / 0 K0.0 IP
2026-04-12 vs HOU0 ER / 0 K1.0 IP