Mithrandir Metrics
Player Houston Astros Refreshed Jul 17 06:00 AM ET
Player profile / Houston Astros

Mike Burrows

P · Bats/Throws R/R · 6' 1", 200 lb · Age 26

Cards
18
Modules
1
Live Δ
yes
Club Houston Astros Position P Roster profile Status IL-15
Traditional line

Season by season

3D Pitch Lab Projections
WLERAGGSSVIPSOWHIP
2024102.701003.121.50
2025243.942319096.0971.24
2026495.991817094.2751.55
3 Seasons7134.9242360194.01741.40
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
26
Pitching
percentile
Pitching9 metrics
33
Arsenal6 metrics
59
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 preseason4.09
ERA current pace5.99
ERA rolling p505.33
Observed weight65%
ERA
4.05 4.65 5.33 6.00 6.60
FIP
3.81 4.39 5.03 5.68 6.26
K%
16.5% 17.6% 18.8% 20.0% 21.1%
BB%
6.3% 7.0% 7.8% 8.5% 9.2%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-07-17
Pitching · percentile strip
WHIP1.55
14
ERA5.99
12
BB%7.8%
63
K%17.3%
15 -31 vs proj
xwOBA allowed0.336
28 -18 vs proj
Barrel allowed8.2%
41
Fastball velo94.8
56
Hard-hit allowed39.6%
45
Whiff%20.1%
26 -28 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-07-17
Changeup Stuff+103
56
Fastball Stuff+102
47
Mithrandir Stuff+103
56
Curveball Stuff+102
58
Sinker Stuff+102
47
Slider Stuff+110
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 Burrows, Mike · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.336 2026-07-06: 0.3322026-07-07: 0.3322026-07-08: 0.3362026-07-09: 0.3362026-07-10: 0.3362026-07-11: 0.3362026-07-12: 0.3362026-07-13: 0.3362026-07-14: 0.3362026-07-15: 0.3362026-07-16: 0.3362026-07-17: 0.336 2026-07-06 2026-07-17 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 Burrows, Mike · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 48%48%Whiff: 20%20%Called strike: 16%16%First pitch strike: 51%51%Hard hit allowed: 40%40% 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 Burrows, Mike · 2026 arsenal snapshot 4-Seam Fastball: 28.5%Changeup: 26.8%Slider: 16.7%Curveball: 14.2%Sinker: 13.8% FF28% · 95 mphprimary pitch FF 28%CH 27%SL 17%CU 14%SI 14% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Burrows, Mike · 2026 arsenal snapshot 15″30″45″60″ 4-Seam Fastball: 28% usage, 3″ horizontal break, 14″ drop, 94.9 mphFF95 mphChangeup: 27% usage, 8″ horizontal break, 31″ drop, 86.7 mphCH87 mphSlider: 17% usage, 1″ horizontal break, 27″ drop, 89.5 mphSL90 mphCurveball: 14% usage, 3″ horizontal break, 57″ drop, 79.0 mphCU79 mphSinker: 14% usage, 8″ horizontal break, 18″ drop, 94.5 mphSI95 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
CH 28.3% 364 103 qualified
FB 28.0% 361 102 qualified
SL 15.5% 199 110 limited sample
CB 14.7% 189 102 limited sample
SI 13.6% 175 102 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"
Weight200 lb
Debut2024-09-28
Live layer

Delta / regression

ERA Δ+1.53
K% Δ-0.047

positive regression

Regression watch

Unlucky so far. Better days ahead.

2.2σ gap
wOBA-against (actual)0.396
xwOBA-against (deserved)0.336

Burrows’s wOBA-against sits at 0.396, but the quality of contact underneath says it should be 0.336 — a gap of 0.059, 2.2 standard deviations from the MLB norm over 99 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
Pitching182026-07-06Four-Seam Fastball played up through FF/CH tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202622.0% K | 4.46 ERAProjection