Mithrandir Metrics
Player Tampa Bay Rays Refreshed Sep 27 06:00 AM ET
Player profile / Tampa Bay Rays

Ben Williamson

2B · Bats/Throws R/R · 6' 0", 210 lb · Age 25

Cards
7
Modules
1
Live Δ
yes
Club Tampa Bay Rays Position 2B Roster Current MLB team Status Healthy / active roster
Traditional line

Season by season

3D Swing Sim Projections
PARHHRSBAVGOBPSLGOPS
2025295367015.253.294.310.604
2026286326238.238.302.318.620
2 Seasons58168132413.245.298.314.612
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
27
Offense
percentile
Offense9 metrics
33
Defense4 metrics
44
Speed2 metrics
68
Plate skills11 metrics
40
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 preseason0.294
xwOBA current pace0.287
xwOBA rolling p500.290
Observed weight58%
xwOBA
0.264 0.276 0.290 0.303 0.316
wOBA
0.284 0.301 0.319 0.337 0.353
ISO
0.074 0.090 0.108 0.126 0.142
K%
16.6% 17.9% 19.3% 20.7% 22.0%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-09-27
Hitting · percentile strip
Barrel%1.3%
5 -27 vs proj
Exit velocity86.7
37
Hard-hit%34.3%
32 -20 vs proj
xBA0.312
41
xSLG0.411
17
xwOBA0.287
32 -30 vs proj
BB%7.9%
42 +23 vs proj
Bat speed67.2
23
K%19.4%
71
Defense · percentile strip
Arm Runs0.2 · 2B
70
Arm Strength89.7 · 2B
70
Outs Above Avg-3.0 · 2B
14
Range Runs-3.1 · 2B
23
Baserunning · percentile strip
SB Success Rate85.7% · 2B
67
Sprint Speed28.1 · 2B
68
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 66.2% · rebadged research
54
Avoids Bad TakesHPT 32.2% · rebadged research
6
Correct Decisions60.5% · rebadged research
8
Mithrandir Stuff+86
7
Resists Breaking - horizontalwOBA 0.273 · borderline
84
Resists Breaking - verticalwOBA 0.271 · insufficient sample
76
Resists ChangeupwOBA 0.261 · validated thin sample
88
Resists Cutters + splitterswOBA 0.338 · insufficient sample
21
Resists FastballwOBA 0.337 · validated
52
Resists SinkerwOBA 0.374 · validated
18
SEAGER+ Plate Discipline95
23
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 Williamson, Ben · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.302 0.287 2026-09-13: 0.2902026-09-14: 0.2902026-09-18: 0.2902026-09-19: 0.2902026-09-20: 0.2902026-09-21: 0.2882026-09-22: 0.2882026-09-23: 0.2882026-09-24: 0.2882026-09-25: 0.2882026-09-26: 0.2872026-09-27: 0.287 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.

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 Williamson, Ben · Aggregate zone metrics; not pitch-by-pitch locations Zone: 48%48%Chase: 32%32%Whiff: 16%16%Zone contact: 91%91%Contact: 84%84%Hard hit: 34%34% 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 Williamson, Ben · 2026 arsenal snapshot Eephus: 100.0% EP100% · 50 mphprimary pitch EP 100% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Williamson, Ben · 2026 arsenal snapshot 24″48″72″96″ Eephus: 100% usage, 0″ horizontal break, 91″ drop, 49.9 mphEP50 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
SL 100.0% 7 86 limited sample
Method note

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

Reference layer

Current snapshot

Age25
Height6' 0"
Weight210 lb
Debut2025-04-15
Live layer

Delta / regression

xwOBA Δ-0.026
wOBA Δ+0.006

negative regression

Regression watch

Running hot. Expect some cooling.

-1.1σ gap
wOBA (actual)0.319
xwOBA (deserved)0.287

Williamson’s wOBA sits at 0.319, but the quality of contact underneath says it should be 0.287 — a gap of 0.032, -1.1 standard deviations from the MLB norm over 304 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
Fielding72026-09-243 chances | 0 difficult plays | Run Exp -0.625
Projection links / recent games

Available detail

Hitter Projections 20260.313 xwOBA | 6 HRProjection
2026-04-17 @ PIT0 HR | 0 RBI / 5 Ch | 0 E0-3 | BB, K
2026-04-15 @ CWS0 HR | 0 RBI / 0 Ch | 0 E0-1
2026-04-14 @ CWS0 HR | 3 RBI / 3 Ch | 0 E2-3 | 2 2B, BB, K
2026-04-12 vs NYY0 HR | 0 RBI / 1 Ch | 0 E1-1
2026-04-11 vs NYY0 HR | 0 RBI / 1 Ch | 0 E0-4 | K