Mithrandir Metrics
Pitcher projection 2026 Refreshed Jul 17 06:00 AM ET
Pitcher projection / PHI · 2026

Kerkering, Orion

Late-inning arm with usable miss-bat shape

Primary
25.2% K%
Range
19.5% to 35.8%
Live Δ
yes
Team PHI Archetype Balanced reliever 2 Age 25 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.

2026-07-17
68
Pitching
percentile
Pitching9 metrics
72
Arsenal4 metrics
76
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-17
ERA preseason3.38
ERA current pace2.43
ERA rolling p503.00
Observed weight40%
ERA
1.45 2.18 3.00 3.81 4.54
FIP
2.57 3.02 3.51 4.00 4.44
K%
20.5% 23.0% 25.7% 28.4% 30.9%
BB%
7.5% 8.7% 10.1% 11.6% 12.8%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-07-17
Pitching · percentile strip
WHIP1.19
70
ERA2.43
89
BB%12.3%
16 -31 vs proj
K%25.9%
74
xwOBA allowed0.267
91 +40 vs proj
Barrel allowed7.3%
58
Fastball velo97.1
88
Hard-hit allowed27.1%
98
Whiff%24.7%
63
Mithrandir+

Stuff+ and arsenal context

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

2026-07-17
Fastball Stuff+102
48
Mithrandir Stuff+107
89
Sinker Stuff+105
70
Slider Stuff+111
96
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 45%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

12 snapshots
Mithrandir Metrics ROLLING XWOBA LINE Parameterized Mithrandir chart rendered as SVG for templates and exports. season=2026 Rolling xwOBA allowed Kerkering, Orion · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.267 2026-07-06: 0.2652026-07-07: 0.2652026-07-08: 0.2652026-07-09: 0.2712026-07-10: 0.2712026-07-11: 0.2712026-07-12: 0.2712026-07-13: 0.2712026-07-14: 0.2672026-07-15: 0.2672026-07-16: 0.2672026-07-17: 0.267 2026-07-06 2026-07-17 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 Kerkering, Orion · Aggregate zone metrics; not pitch-by-pitch locations Edge: 39%39%Zone: 47%47%Whiff: 25%25%Called strike: 19%19%First pitch strike: 54%54%Hard hit allowed: 27%27% 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 Kerkering, Orion · 2026 arsenal snapshot Sweeper: 45.2%4-Seam Fastball: 31.8%Sinker: 19.0%Split-Finger: 4.0% ST45% · 87 mphprimary pitch ST 45%FF 32%SI 19%FS 4% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Kerkering, Orion · 2026 arsenal snapshot 12″24″36″48″ Sweeper: 45% usage, 2″ horizontal break, 37″ drop, 87.2 mphST87 mph4-Seam Fastball: 32% usage, 4″ horizontal break, 13″ drop, 97.4 mphFF97 mphSinker: 19% usage, 15″ horizontal break, 19″ drop, 96.6 mphSI97 mphSplit-Finger: 4% usage, 15″ horizontal break, 26″ drop, 92.5 mphFS93 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 48.6% 194 111 limited sample
FB 29.6% 118 102 limited sample
SI 21.8% 87 105 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.
2
templated note
Home park slightly inflates the home-run risk band.
3
templated note
Primary mix entering the season: Sweeper 48%, 4-Seam Fastball 33%, Sinker 19%.
Live context

Current-season signal

ERA Δ-1.49
K% Δ+0.007
Sample37.7 IP

positive regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings38.8----
Batters Faced168----
K%25.2%19.5% to 35.8%+/- 8.2%
BB%8.8%4.9% to 12.8%+/- 3.9%
Whiff%23.9%19.1% to 31.0%+/- 6.0%
HR/91.160.43 to 1.77+/- 0.67
xwOBA Against0.3130.231 to 0.338+/- 0.054
Barrel% Allowed7.2%4.1% to 11.1%+/- 3.5%
ERA3.921.18 to 5.47+/- 2.14
FIP3.541.85 to 4.44+/- 1.30
WHIP1.3071.010 to 1.687+/- 0.338
Platoon / Shape
vs LHH

249 career BF

xwOBA0.286
K%25.3%
BB%9.5%
Barrel6.5%
vs RHH

360 career BF

xwOBA0.275
K%25.2%
BB%7.1%
Barrel6.9%