Mithrandir Metrics
Player WSH Refreshed Sep 26 06:00 AM ET
Player profile / WSH

Jorbit Vivas

Player · Bats/Throws L/R · 5' 9", 171 lb · Age 25

Cards
28
Modules
2
Live Δ
yes
Club WSH Position -- Roster profile Status Healthy / active roster
Traditional line

Season by season

3D Swing Sim Projections
PARHHRSBAVGOBPSLGOPS
2025666910.161.266.250.516
2026364327432.238.331.322.653
2 Seasons430388342.226.321.311.632
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.

2026-09-26
14
Offense
percentile
Offense9 metrics
31
Defense4 metrics
57
Speed2 metrics
54
Plate skills12 metrics
55
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-26
xwOBA preseason0.293
xwOBA current pace0.293
xwOBA rolling p500.293
Observed weight63%
xwOBA
0.261 0.276 0.293 0.309 0.324
wOBA
0.293 0.308 0.324 0.341 0.355
ISO
0.062 0.077 0.095 0.112 0.128
K%
14.3% 16.1% 18.0% 20.0% 21.8%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-26
Hitting · percentile strip
Barrel%2.1%
14 -15 vs proj
Exit velocity82.4
6
Hard-hit%21.6%
4 -31 vs proj
xBA0.285
18
xSLG0.374
7
xwOBA0.293
37 -23 vs proj
BB%11.3%
83 +50 vs proj
Bat speed67.5
24
K%15.0%
89 +38 vs proj
Defense · percentile strip
Arm Runs0.1 · 2B
49
Arm Strength82.3 · 2B
11
Outs Above Avg4.0 · 2B
88
Range Runs2.9 · 2B
81
Baserunning · percentile strip
Base Running Runs1.2 · 2B
67
Sprint Speed27.1 · 2B
41
SB Success Rate100.0% · 2B
Small sample
Mithrandir+

Stuff+ and arsenal context

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

2026-09-26
Avoids Bad ChasesST 67.8% · rebadged research
63
Avoids Bad TakesHPT 17.4% · rebadged research
95
Correct Decisions71.2% · rebadged research
91
SEAGER+ Plate Discipline111
92
Curveball Stuff+91
0
Mithrandir Stuff+77
5
Resists Breaking - horizontalwOBA 0.279 · borderline
72
Resists Breaking - verticalwOBA 0.282 · insufficient sample
42
Resists ChangeupwOBA 0.276 · validated thin sample
64
Resists Cutters + splitterswOBA 0.335 · insufficient sample
26
Resists FastballwOBA 0.354 · validated
24
Resists SinkerwOBA 0.331 · validated
92
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 Vivas, Jorbit · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.302 0.293 2026-09-12: 0.2992026-09-13: 0.2952026-09-14: 0.2952026-09-18: 0.2922026-09-19: 0.2932026-09-20: 0.2932026-09-21: 0.2952026-09-22: 0.2942026-09-23: 0.2932026-09-24: 0.2932026-09-25: 0.2932026-09-26: 0.293 2026-09-12 2026-09-26 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.

1Pitches 2026Season 100%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 Vivas, Jorbit · Aggregate zone metrics; not pitch-by-pitch locations Zone: 45%45%Chase: 29%29%Whiff: 17%17%Zone contact: 92%92%Contact: 83%83%Hard hit: 22%22% 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 Vivas, Jorbit · 2026 arsenal snapshot Eephus: 100.0% EP100% · 46 mphprimary pitch EP 100% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Vivas, Jorbit · 2026 arsenal snapshot 6″12″18″24″ Eephus: 100% usage, 0″ horizontal break, 10″ drop, 45.6 mphEP46 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
CB 83.3% 10 91 limited sample
SL 16.7% 2 65 limited sample
Method note

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

Reference layer

Current snapshot

MLB bio context is unavailable.
Live layer

Delta / regression

xwOBA Δ-0.020
wOBA Δ+0.012

negative regression

Regression watch

Running hot. Expect some cooling.

-1.1σ gap
wOBA (actual)0.324
xwOBA (deserved)0.293

Vivas’s wOBA sits at 0.324, but the quality of contact underneath says it should be 0.293 — a gap of 0.032, -1.1 standard deviations from the MLB norm over 373 PA. The results have outrun the underlying process; as the sample grows, expect the numbers to drift back toward the deserved level.

Comp Engine · 2026 profile shape

Closest profiles

Full constellation →
PlayerSimilarityAgrees onOpen
Cronenworth, Jake SD · L 0.70 Oppo rateChase rate Player · Projection
Durbin, Caleb BOS · R 0.67 xwOBA on contactBarrel rate Player · Projection
Triolo, Jared PIT · R 0.64 Swing lengthMax exit velocity Player · Projection
Palacios, Richie TB · L 0.64 Walk rateFly-ball rate Player · Projection

Profile-shape similarity, not results: six weighted feature groups standardized within this season's qualified hitters.

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Hitting12026-06-23Impact contact was the main driver
Fielding272026-09-222 chances | 0 difficult plays | Run Exp -0.105
Projection links / recent games

Available detail

Hitter Projections 20260.312 xwOBA | 6 HRProjection