Mithrandir Metrics
Player Miami Marlins Refreshed Jun 15 06:00 AM ET
Player profile / Miami Marlins

Michael Petersen

P · Bats/Throws R/R · 6' 7", 195 lb · Age 32

Cards
0
Modules
0
Live Δ
yes
Club Miami Marlins Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024315.95160019.2141.63
2025004.00150018.0171.39
2026113.07270129.1341.06
3 Seasons424.16580167.0651.31
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.

2026-06-15
64
Pitching
percentile
Pitching9 metrics
60
Arsenal4 metrics
77
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-15
ERA preseason3.60
ERA current pace3.29
ERA rolling p503.49
Observed weight35%
ERA
1.81 2.61 3.49 4.37 5.17
FIP
2.58 3.04 3.54 4.05 4.50
K%
17.4% 20.0% 22.8% 25.6% 28.2%
BB%
7.1% 8.4% 9.9% 11.4% 12.8%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-15
Pitching · percentile strip
WHIP1.15
73
ERA3.29
64
BB%11.8%
19 -21 vs proj
K%27.6%
83 +35 vs proj
xwOBA allowed0.280
81 +41 vs proj
Barrel allowed11.0%
16 -29 vs proj
Fastball velo97.4
92
Hard-hit allowed41.1%
40
Whiff%26.2%
73 +27 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-06-15
Fastball Stuff+108
89
Changeup Stuff+104
64
Mithrandir Stuff+107
89
Slider Stuff+104
65
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 Petersen, Michael · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.280 2026-06-04: 0.2882026-06-05: 0.2882026-06-06: 0.2882026-06-07: 0.2882026-06-08: 0.2832026-06-09: 0.2832026-06-10: 0.2832026-06-11: 0.2892026-06-12: 0.2892026-06-13: 0.2912026-06-14: 0.2912026-06-15: 0.280 2026-06-04 2026-06-15 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.

3Pitches 2026Season 58%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 Petersen, Michael · Aggregate zone metrics; not pitch-by-pitch locations Edge: 35%35%Zone: 47%47%Whiff: 26%26%Called strike: 16%16%First pitch strike: 51%51%Hard hit allowed: 41%41% 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 Petersen, Michael · 2026 arsenal snapshot 4-Seam Fastball: 57.7%Slider: 28.0%Changeup: 14.4% FF58% · 97 mphprimary pitch FF 58%SL 28%CH 14% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Petersen, Michael · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 58% usage, 3″ horizontal break, 9″ drop, 97.4 mphFF97 mphSlider: 28% usage, 0″ horizontal break, 39″ drop, 86.1 mphSL86 mphChangeup: 14% usage, 4″ horizontal break, 27″ drop, 88.4 mphCH88 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 56.3% 205 108 qualified
SL 27.2% 99 104 limited sample
CH 16.5% 60 104 limited sample
Method note

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

Reference layer

Current snapshot

Age32
Height6' 7"
Weight195 lb
Debut2024-06-18
Live layer

Delta / regression

ERA Δ-0.59
K% Δ+0.052
Mithrandir coverage

Module shelf

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

Available detail

Pitcher Projections 202622.4% K | 3.88 ERAProjection
2026-04-14 @ ATL0 ER / 1 K2.0 IP
2026-04-11 @ DET0 ER / 0 K1.0 IP
2026-04-08 vs CIN0 ER / 2 K1.0 IP
2026-04-04 @ NYY2 ER / 0 K1.0 IP
2026-04-03 @ NYY1 ER / 1 K1.0 IP