Mithrandir Metrics
Player Kansas City Royals Refreshed Jul 18 06:00 AM ET
Player profile / Kansas City Royals

John Schreiber

P · Bats/Throws R/R · 6' 2", 224 lb · Age 32

Cards
0
Modules
0
Live Δ
yes
Club Kansas City Royals Position P Roster Active Status Healthy / active roster
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024433.66590251.2461.32
2025333.80740164.0621.19
2026033.38410137.1281.29
8 Seasons15153.61313213296.13011.25
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.

2026-07-18
42
Pitching
percentile
Pitching9 metrics
45
Arsenal6 metrics
52
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-18
ERA preseason4.07
ERA current pace3.47
ERA rolling p503.82
Observed weight41%
ERA
2.48 3.11 3.82 4.53 5.17
FIP
3.64 3.99 4.37 4.75 5.10
K%
16.6% 18.5% 20.6% 22.7% 24.7%
BB%
7.1% 8.3% 9.6% 10.9% 12.0%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-18
Pitching · percentile strip
WHIP1.36
44
ERA3.47
65
BB%9.5%
39
K%18.9%
26
xwOBA allowed0.326
38
Barrel allowed6.8%
64
Fastball velo93.3
30
Hard-hit allowed39.3%
48
Whiff%23.2%
52 +19 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-07-18
Changeup Stuff+103
53
Cutter Stuff+104
73
Fastball Stuff+100
30
Mithrandir Stuff+103
54
Sinker Stuff+105
78
Slider Stuff+97
22
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 Schreiber, John · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.326 2026-07-07: 0.3152026-07-08: 0.3152026-07-09: 0.3212026-07-10: 0.3212026-07-11: 0.3212026-07-12: 0.3212026-07-13: 0.3222026-07-14: 0.3262026-07-15: 0.3262026-07-16: 0.3262026-07-17: 0.3262026-07-18: 0.326 2026-07-07 2026-07-18 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 28%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 Schreiber, John · Aggregate zone metrics; not pitch-by-pitch locations Edge: 34%34%Zone: 48%48%Whiff: 23%23%Called strike: 19%19%First pitch strike: 49%49%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 Schreiber, John · 2026 arsenal snapshot 4-Seam Fastball: 27.8%Sweeper: 26.3%Sinker: 22.5%Cutter: 13.5%Changeup: 9.9% FF28% · 94 mphprimary pitch FF 28%ST 26%SI 22%FC 13%CH 10% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Schreiber, John · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 28% usage, 1″ horizontal break, 21″ drop, 93.6 mphFF94 mphSweeper: 26% usage, 5″ horizontal break, 39″ drop, 82.2 mphST82 mphSinker: 22% usage, 4″ horizontal break, 34″ drop, 93.0 mphSI93 mphCutter: 13% usage, 1″ horizontal break, 29″ drop, 89.2 mphFC89 mphChangeup: 10% usage, 8″ horizontal break, 41″ drop, 86.4 mphCH86 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 26.8% 116 100 limited sample
SI 24.2% 105 105 limited sample
SL 23.3% 101 97 limited sample
FC 14.3% 62 104 limited sample
CH 11.3% 49 103 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' 2"
Weight224 lb
Debut2019-08-09
Live layer

Delta / regression

ERA Δ-0.35
K% Δ-0.023

positive regression

Regression watch

Unlucky so far. Better days ahead.

1.9σ gap
wOBA-against (actual)0.392
xwOBA-against (deserved)0.326

Schreiber’s wOBA-against sits at 0.392, but the quality of contact underneath says it should be 0.326 — a gap of 0.066, 1.9 standard deviations from the MLB norm over 39 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 202621.2% K | 3.82 ERAProjection
2026-04-20 vs BAL0 ER / 0 K0.2 IP
2026-04-12 vs CWS1 ER / 1 K1.0 IP
2026-04-09 vs CWS0 ER / 0 K0.2 IP
2026-04-07 @ CLE1 ER / 0 K0.1 IP
2026-04-04 vs MIL0 ER / 0 K1.0 IP