Mithrandir Metrics
Player Los Angeles Dodgers Refreshed Jun 2 06:00 AM ET
Player profile / Los Angeles Dodgers

Roki Sasaki

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

Cards
13
Modules
1
Live Δ
yes
Club Los Angeles Dodgers Position P 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.

2026-06-02
ERA preseason4.16
ERA current pace4.93
ERA rolling p504.56
Observed weight51%
ERA
3.13 3.81 4.56 5.31 5.98
FIP
4.17 4.57 5.01 5.45 5.84
K%
17.6% 19.4% 21.3% 23.3% 25.1%
BB%
9.0% 10.0% 11.1% 12.3% 13.3%
Live percentile strip

Current traits vs projection tick

100th = best in MLB.

2026-06-02
Pitching · percentile strip
BB%11.4%
21
Barrel allowed12.4%
6 -30 vs proj
Fastball velo97.2
89
Hard-hit allowed44.7%
18
K%22.4%
52 +20 vs proj
Whiff%26.7%
75 +28 vs proj
xwOBA allowed0.336
32
Mithrandir+

Stuff+ and arsenal context

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

2026-06-02
Mithrandir Stuff+104
64
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 Sasaki, Roki · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 2026-05-19: 0.3532026-05-21: 0.3532026-05-23: 0.3532026-05-24: 0.3492026-05-25: 0.3492026-05-26: 0.3492026-05-28: 0.3492026-05-29: 0.3482026-05-30: 0.3482026-05-31: 0.3482026-06-01: 0.3362026-06-02: 0.336 2026-05-19 2026-06-02 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 44%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 Sasaki, Roki · Aggregate zone metrics; not pitch-by-pitch locations Edge: 34%34%Zone: 46%46%Whiff: 27%27%Called strike: 14%14%First pitch strike: 50%50%Hard hit allowed: 45%45% 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 Sasaki, Roki · 2026 arsenal snapshot 4-Seam Fastball: 44.1%Slider: 21.0%Forkball: 17.5%Split-Finger: 16.5%Sinker: 0.9% MIX FF 44%SL 21%FO 18%FS 16%SI 1% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Sasaki, Roki · 2026 arsenal snapshot FF: HB -0.1, IVB 1.1FFSL: HB -0.0, IVB 3.2SLFO: HB -0.1, IVB 3.4FOFS: HB -0.2, IVB 2.7FSSI: HB 1.2, IVB 1.5SI horizontal break IVB MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 68.0% 355 102 qualified
SL 32.0% 167 103 limited sample
Method note

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

Reference layer

Current snapshot

Age24
Height6' 2"
Weight187 lb
Debut2025-03-19
Live layer

Delta / regression

ERA Δ+0.24
K% Δ+0.024

positive regression

Mithrandir coverage

Module shelf

ModuleCardsLatestSignal
Pitching132026-05-234-Seam Fastball played up through FF/SL tunnel quality
Projection links / recent games

Available detail

Pitcher Projections 202620.0% K | 4.69 ERAProjection
2026-04-12 vs TEX2 ER / 6 K4.0 IP
2026-04-05 @ WSH6 ER / 5 K5.0 IP
2026-03-30 vs CLE1 ER / 4 K4.0 IP