Mithrandir Metrics
Pitcher projection 2026 Refreshed Aug 31 06:00 AM ET
Pitcher projection / NYM · 2026

Stock, Robert

Run-prevention profile built on workable command

Primary
18.5% K%
Range
0.2% to 19.0%
Live Δ
yes
Team NYM Archetype Volatile contact Age 37 Status Healthy / active roster
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.

2026-08-31
19
Pitching
percentile
Pitching9 metrics
37
Arsenal6 metrics
46
Rolling projection

Preseason / current pace / Bayesian update

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

2026-08-31
ERA preseason3.92
ERA current pace5.40
ERA rolling p504.37
Observed weight30%
ERA
2.18 3.22 4.37 5.53 6.57
FIP
3.11 3.79 4.53 5.28 5.96
K%
8.3% 11.5% 15.0% 18.5% 21.7%
BB%
5.8% 7.9% 10.3% 12.6% 14.8%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-08-31
Pitching · percentile strip
WHIP2.00
1
ERA5.40
18
BB%12.4%
17 -23 vs proj
K%20.0%
35
xwOBA allowed0.339
24 -47 vs proj
Barrel allowed9.0%
28 -30 vs proj
Fastball velo94.9
57
Hard-hit allowed29.9%
96
Whiff%23.8%
58
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; Arsenal Decomposition remains descriptive support under Stuff+.

2026-08-31
Changeup Stuff+87
3
Cutter Stuff+105
84
Fastball Stuff+105
69
Mithrandir Stuff+103
55
Sinker Stuff+97
15
Slider Stuff+102
52
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 31%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

5 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Stock, Robert · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.339 2026-08-27: 0.3392026-08-28: 0.3392026-08-29: 0.3392026-08-30: 0.3392026-08-31: 0.339 2026-08-27 2026-08-31 xwOBA allowed MITHRANDIR · CHARTS
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 Stock, Robert · Aggregate zone metrics; not pitch-by-pitch locations Edge: 39%39%Zone: 49%49%Whiff: 24%24%Called strike: 16%16%First pitch strike: 49%49%Hard hit allowed: 30%30% 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 Stock, Robert · 2026 arsenal snapshot Cutter: 31.4%4-Seam Fastball: 26.7%Sinker: 20.3%Sweeper: 12.1%Changeup: 9.4% FC31% · 91 mphprimary pitch FC 31%FF 27%SI 20%ST 12%CH 9% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Stock, Robert · 2026 arsenal snapshot 12″24″36″48″ Cutter: 31% usage, 0″ horizontal break, 24″ drop, 91.1 mphFC91 mph4-Seam Fastball: 27% usage, 5″ horizontal break, 20″ drop, 95.8 mphFF96 mphSinker: 20% usage, 1″ horizontal break, 29″ drop, 93.8 mphSI94 mphSweeper: 12% usage, 1″ horizontal break, 39″ drop, 80.6 mphST81 mphChangeup: 9% usage, 12″ horizontal break, 37″ drop, 81.1 mphCH81 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FC 31.2% 126 105 limited sample
FB 27.0% 109 105 limited sample
SI 20.3% 82 97 limited sample
SL 12.1% 49 102 limited sample
CH 9.4% 38 87 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.
pitcher
2
templated note
Primary mix entering the season: Cutter 44%, Sinker 32%, 4-Seam Fastball 10%.
pitcher
Live context

Current-season signal

ERA Δ+1.36
K% Δ+0.015
Sample20.0 IP
Projection table

Point projection and range

MetricPointRangeHalf-width
Innings35.4----
Batters Faced168----
K%18.5%0.2% to 19.0%+/- 9.4%
BB%9.7%4.2% to 16.7%+/- 6.2%
Whiff%22.4%3.0% to 24.4%+/- 10.7%
HR/91.500.00 to 2.11+/- 1.06
xwOBA Against0.2940.083 to 0.373+/- 0.145
Barrel% Allowed6.9%0.1% to 9.7%+/- 4.8%
ERA4.150.18 to 5.96+/- 2.89
FIP4.362.59 to 6.34+/- 1.87
WHIP1.3000.759 to 1.609+/- 0.425
Platoon / Shape
vs LHH

176 career BF

xwOBA0.119
K%1.9%
BB%8.9%
Barrel2.1%
vs RHH

197 career BF

xwOBA0.113
K%2.0%
BB%6.2%
Barrel2.1%