Mithrandir Metrics
Player Washington Nationals Refreshed Jun 1 06:00 AM ET
Player profile / Washington Nationals

Jorbit Vivas

3B profile with live context, projection links, and Mithrandir card history when available.

Cards
0
Modules
0
Live Δ
yes
Club Washington Nationals Position 3B Roster Active Status Healthy / active roster
Rolling projection

Preseason / current pace / Bayesian update

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

2026-06-01
xwOBA preseason0.293
xwOBA current pace0.277
xwOBA rolling p500.287
Observed weight38%
xwOBA
0.240 0.262 0.287 0.311 0.333
wOBA
0.289 0.314 0.341 0.369 0.393
ISO
0.048 0.073 0.101 0.129 0.154
K%
14.4% 17.2% 20.3% 23.4% 26.2%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-01
Hitting · percentile strip
BB%8.9%
49 +19 vs proj
Barrel%2.2%
16
Bat speed67.1
22
Exit velocity82.2
5
Hard-hit%23.7%
5 -24 vs proj
K%15.6%
85 +41 vs proj
xBA0.265
10
xSLG0.347
5
xwOBA0.277
22 -31 vs proj
Defense · percentile strip
Arm Strength80.0 · 3B
12
Outs Above Avg2.0 · 3B
81
Range Runs0.2 · 3B
45
Baserunning · percentile strip
Sprint Speed26.8 · 3B
36
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.

2026-06-01
Avoids Bad ChasesST 67.7% · rebadged research
61
Avoids Bad TakesHPT 15.6% · rebadged research
97
Correct Decisions72.6% · rebadged research
94
Mithrandir Stuff+81
4
Resists Breaking - horizontalwOBA 0.269 · borderline
83
Resists Breaking - verticalwOBA 0.270 · insufficient sample
76
Resists ChangeupwOBA 0.285 · validated thin sample
26
Resists Cutters + splitterswOBA 0.320 · insufficient sample
82
Resists FastballwOBA 0.357 · validated
20
Resists SinkerwOBA 0.360 · validated
38
SEAGER+ Plate Discipline110
93
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 0.313 2026-05-17: 0.2842026-05-19: 0.2922026-05-21: 0.2902026-05-23: 0.2852026-05-24: 0.2782026-05-25: 0.2782026-05-26: 0.2782026-05-28: 0.2752026-05-29: 0.2752026-05-30: 0.2752026-05-31: 0.2732026-06-01: 0.277 2026-05-17 2026-06-01 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 2026Season 83%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: 46%46%Chase: 27%27%Whiff: 16%16%Zone contact: 93%93%Contact: 84%84%Hard hit: 24%24% 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 Vivas, Jorbit · 2026 arsenal snapshot Curveball: 83.3%Slider: 16.7% MIX CU 83%SL 17% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Vivas, Jorbit · 2026 arsenal snapshot CU: HB -0.1, IVB 11.1CUSL: HB -0.2, IVB 9.4SL horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
CB 83.3% 10 92 limited sample
SL 16.7% 2 87 limited sample
Method note

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

Reference layer

Current snapshot

Age25
Height5' 9"
Weight171 lb
Debut2025-05-02
Live layer

Delta / regression

xwOBA Δ-0.036
wOBA Δ+0.029

negative regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
No Mithrandir card history is available for this player yet.
Projection links / recent games

Available detail

Hitter Projections 20260.312 xwOBA | 6 HRProjection
2026-04-17 vs SF0 HR | 0 RBI / 0 Ch | 0 E0-1
2026-04-15 @ PIT0 HR | 0 RBI / 3 Ch | 0 E1-3 | K
2026-04-14 @ PIT0 HR | 0 RBI / 2 Ch | 1 E1-3 | HBP, K
2026-04-13 @ PIT0 HR | 0 RBI / 2 Ch | 0 E1-3 | 2B, BB, R
2026-04-12 @ MIL0 HR | 0 RBI / 2 Ch | 0 E1-3