Mithrandir Metrics
Player Los Angeles Angels Refreshed Sep 27 06:00 AM ET
Player profile / Los Angeles Angels

Tyler Heineman

C · Bats/Throws S/R · 5' 10", 190 lb · Age 35

Cards
3
Modules
1
Live Δ
yes
Club Los Angeles Angels Position C Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Swing Sim Projections
PARHHRSBAVGOBPSLGOPS
2024162100.083.313.083.396
2025174254332.289.361.416.777
2026200153111.175.223.220.443
7 Seasons6736712956.220.293.294.587
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.

2026-09-27
3
Offense
percentile
Offense9 metrics
12
Defense4 metrics
71
Speed1 metrics
16
Plate skills12 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.

2026-09-27
xwOBA preseason0.283
xwOBA current pace0.236
xwOBA rolling p500.260
Observed weight48%
xwOBA
0.223 0.240 0.260 0.279 0.297
wOBA
0.199 0.217 0.237 0.257 0.275
ISO
0.044 0.065 0.089 0.113 0.134
K%
13.3% 15.1% 17.0% 19.0% 20.8%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-27
Hitting · percentile strip
Barrel%0.5%
2
Exit velocity76.8
0
Hard-hit%12.8%
1
xBA0.258
7
xSLG0.312
2
xwOBA0.236
5
BB%2.4%
2 -32 vs proj
Bat speed60.1
0
K%14.6%
90 +15 vs proj
Defense · percentile strip
Blocking Runs0.0 · C
53
Catcher Throwing2.3 · C
89
Framing Runs6.0 · C
94
Pop Time1.9 · C
46
Baserunning · percentile strip
Sprint Speed26.0 · C
16
SB Success Rate100.0% · C
Small sample
Mithrandir+

Stuff+ and arsenal context

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

2026-09-27
Avoids Bad ChasesST 55.0% · rebadged research
10
Avoids Bad TakesHPT 30.6% · rebadged research
10
Correct Decisions61.5% · rebadged research
13
Fastball Stuff+53
0
Mithrandir Stuff+37
0
Resists Breaking - horizontalwOBA 0.270 · borderline
87
Resists Breaking - verticalwOBA 0.250 · insufficient sample
98
Resists ChangeupwOBA 0.244 · validated thin sample
98
Resists Cutters + splitterswOBA 0.300 · insufficient sample
92
Resists FastballwOBA 0.333 · validated
61
Resists SinkerwOBA 0.347 · validated
75
SEAGER+ Plate Discipline85
6
Rolling form chart

xwOBA 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 Heineman, Tyler · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.302 0.236 2026-09-13: 0.2412026-09-14: 0.2412026-09-18: 0.2362026-09-19: 0.2362026-09-20: 0.2362026-09-21: 0.2372026-09-22: 0.2372026-09-23: 0.2372026-09-24: 0.2382026-09-25: 0.2382026-09-26: 0.2382026-09-27: 0.236 2026-09-13 2026-09-27 xwOBA 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.

2Pitches 2025Season 91%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 Swing Zone Profile Heineman, Tyler · Aggregate zone metrics; not pitch-by-pitch locations Zone: 49%49%Chase: 43%43%Whiff: 18%18%Zone contact: 91%91%Contact: 82%82%Hard hit: 13%13% Dashed border = aggregate mixed-batter zone proxy MITHRANDIR · CHARTS
Pitch arsenal

Usage mix, movement map, and Stuff+ composition

2025 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 →

2025
Mithrandir Metrics PITCH ARSENAL DONUT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Heineman, Tyler · 2025 arsenal snapshot Eephus: 91.4%Other: 8.6% EP91% · 52 mphprimary pitch EP 91%FA 9% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Heineman, Tyler · 2025 arsenal snapshot 24″48″72″96″ Eephus: 91% usage, 0″ horizontal break, 86″ drop, 51.5 mphEP52 mphOther: 9% usage, 2″ horizontal break, 40″ drop, 67.3 mphFA67 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 100.0% 12 53 limited sample
Method note

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

Reference layer

Current snapshot

Age35
Height5' 10"
Weight190 lb
Debut2019-09-04
Live layer

Delta / regression

xwOBA Δ-0.023
wOBA Δ-0.022

negative regression

Regression watch

Running hot. Expect some cooling.

-0.0σ gap
wOBA (actual)0.237
xwOBA (deserved)0.236

Heineman’s wOBA sits at 0.237, but the quality of contact underneath says it should be 0.236 — a gap of 0.001, -0.0 standard deviations from the MLB norm over 206 PA. The results have outrun the underlying process; as the sample grows, expect the numbers to drift back toward the deserved level.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Fielding32026-09-121 chances | 0 difficult plays | Run Exp -0.736
Projection links / recent games

Available detail

Hitter Projections 20260.258 xwOBA | 7 HRProjection
2026-08-15 vs KC0 HR | 0 RBI / 13 Ch | 0 E0-3
2026-04-20 @ LAA0 HR | 0 RBI / 18 Ch | 0 E0-2 | K
2026-04-17 @ AZ0 HR | 0 RBI / 6 Ch | 1 E1-3 | K, R
2026-04-14 @ MIL0 HR | 0 RBI / 3 Ch | 0 E0-1
2026-04-08 vs LAD0 HR | 0 RBI / 9 Ch | 0 E1-3 | K