Mithrandir Metrics
Pitcher projection 2026 Refreshed Sep 2 06:00 AM ET
Pitcher projection / LAD · 2026

Yamamoto, Yoshinobu

Run-prevention profile built on workable command

Primary
25.9% K%
Range
23.5% to 34.2%
Live Δ
yes
Team LAD Archetype Balanced starter Age 28 Status Healthy / active roster
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.

2026-09-02
87
Pitching
percentile
Pitching9 metrics
78
Arsenal6 metrics
84
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-02
ERA preseason3.07
ERA current pace2.61
ERA rolling p502.74
Observed weight72%
ERA
1.75 2.22 2.74 3.26 3.73
FIP
2.43 2.80 3.21 3.61 3.98
K%
23.6% 24.7% 25.8% 27.0% 28.0%
BB%
5.2% 5.7% 6.3% 6.9% 7.4%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-09-02
Pitching · percentile strip
WHIP0.90
97
ERA2.61
87
BB%5.9%
90 +26 vs proj
K%25.6%
74
xwOBA allowed0.271
88 +29 vs proj
Barrel allowed6.2%
69 +26 vs proj
Fastball velo95.8
73
Hard-hit allowed36.7%
63
Whiff%24.0%
59
Mithrandir+

Stuff+ and arsenal context

Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; Arsenal Decomposition remains descriptive support under Stuff+.

2026-09-02
Cutter Stuff+104
72
Fastball Stuff+107
84
Mithrandir Stuff+106
87
Curveball Stuff+105
86
Sinker Stuff+105
78
Slider Stuff+111
98
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.

6Pitches 2026Season 27%Top usage
ride armside gloveside +Arsenal gap +Shape contrast
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 Yamamoto, Yoshinobu · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.271 2026-08-22: 0.2732026-08-23: 0.2732026-08-24: 0.2732026-08-25: 0.2702026-08-26: 0.2702026-08-27: 0.2702026-08-28: 0.2712026-08-29: 0.2712026-08-30: 0.2712026-08-31: 0.2712026-09-01: 0.2712026-09-02: 0.271 2026-08-22 2026-09-02 xwOBA allowed MITHRANDIR · CHARTS
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 Yamamoto, Yoshinobu · Aggregate zone metrics; not pitch-by-pitch locations Edge: 39%39%Zone: 48%48%Whiff: 24%24%Called strike: 17%17%First pitch strike: 51%51%Hard hit allowed: 37%37% 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 Yamamoto, Yoshinobu · 2026 arsenal snapshot Split-Finger: 26.8%4-Seam Fastball: 26.6%Cutter: 15.1%Sinker: 12.7%Curveball: 12.6%Slider: 6.1% FS27% · 91 mphprimary pitch FS 27%FF 27%FC 15%SI 13%CU 13%SL 6% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Yamamoto, Yoshinobu · 2026 arsenal snapshot 18″36″54″72″ Split-Finger: 27% usage, 3″ horizontal break, 31″ drop, 91.4 mphFS91 mph4-Seam Fastball: 27% usage, 2″ horizontal break, 14″ drop, 96.0 mphFF96 mphCutter: 15% usage, 1″ horizontal break, 24″ drop, 91.6 mphFC92 mphSinker: 13% usage, 7″ horizontal break, 18″ drop, 95.4 mphSI95 mphCurveball: 13% usage, 3″ horizontal break, 63″ drop, 76.9 mphCU77 mphSlider: 6% usage, 4″ horizontal break, 34″ drop, 86.9 mphSL87 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 37.0% 429 107 qualified
FC 21.4% 248 104 qualified
SI 17.1% 198 105 limited sample
CB 16.8% 194 105 limited sample
SL 7.7% 89 111 limited sample
Method note

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

Model read

Projection notes

1
templated note
Home park slightly inflates the home-run risk band.
pitcher
2
templated note
Primary mix entering the season: 4-Seam Fastball 34%, Split-Finger 26%, Curveball 18%.
pitcher
Live context

Current-season signal

ERA Δ-1.16
K% Δ-0.003
Sample161.0 IP

negative regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings76.0----
Batters Faced307----
K%25.9%23.5% to 34.2%+/- 5.3%
BB%7.9%5.6% to 10.3%+/- 2.3%
Whiff%25.2%23.3% to 31.3%+/- 4.0%
HR/91.280.51 to 1.64+/- 0.57
xwOBA Against0.3070.246 to 0.309+/- 0.032
Barrel% Allowed7.9%5.4% to 10.9%+/- 2.7%
ERA3.772.10 to 4.63+/- 1.27
FIP3.692.20 to 4.16+/- 0.98
WHIP1.2000.887 to 1.392+/- 0.253
Platoon / Shape
vs LHH

611 career BF

xwOBA0.252
K%25.5%
BB%7.5%
Barrel5.3%
vs RHH

663 career BF

xwOBA0.270
K%26.4%
BB%7.1%
Barrel8.4%