Mithrandir Metrics
Pitcher projection 2026 Refreshed Jul 17 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.

2026-07-17
83
Pitching
percentile
Pitching9 metrics
77
Arsenal6 metrics
83
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-17
ERA preseason3.06
ERA current pace2.85
ERA rolling p502.92
Observed weight65%
ERA
1.99 2.43 2.92 3.42 3.86
FIP
2.53 2.88 3.26 3.64 3.98
K%
23.3% 24.5% 25.8% 27.1% 28.3%
BB%
5.1% 5.7% 6.4% 7.0% 7.6%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-07-17
Pitching · percentile strip
WHIP0.92
94
ERA2.85
79
BB%5.9%
88 +26 vs proj
K%25.5%
71
xwOBA allowed0.280
82 +25 vs proj
Barrel allowed6.3%
71 +26 vs proj
Fastball velo95.8
72
Hard-hit allowed35.7%
71
Whiff%24.6%
62
Mithrandir+

Stuff+ and arsenal context

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

2026-07-17
Fastball Stuff+106
76
Mithrandir Stuff+107
88
Curveball Stuff+105
94
Cutter Stuff+105
76
Sinker Stuff+104
69
Slider Stuff+112
97
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 0.314 0.280 2026-07-06: 0.2842026-07-07: 0.2842026-07-08: 0.2842026-07-09: 0.2842026-07-10: 0.2842026-07-11: 0.2842026-07-12: 0.2842026-07-13: 0.2802026-07-14: 0.2802026-07-15: 0.2802026-07-16: 0.2802026-07-17: 0.280 2026-07-06 2026-07-17 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: 49%49%Whiff: 25%25%Called strike: 16%16%First pitch strike: 49%49%Hard hit allowed: 36%36% 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: 27.2%4-Seam Fastball: 26.5%Curveball: 13.6%Cutter: 13.0%Sinker: 12.7%Slider: 7.0% FS27% · 91 mphprimary pitch FS 27%FF 27%CU 14%FC 13%SI 13%SL 7% 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, 2″ horizontal break, 31″ drop, 91.4 mphFS91 mph4-Seam Fastball: 27% usage, 2″ horizontal break, 13″ drop, 96.0 mphFF96 mphCurveball: 14% usage, 2″ horizontal break, 62″ drop, 77.1 mphCU77 mphCutter: 13% usage, 0″ horizontal break, 25″ drop, 91.4 mphFC91 mphSinker: 13% usage, 9″ horizontal break, 18″ drop, 95.4 mphSI95 mphSlider: 7% usage, 4″ horizontal break, 34″ drop, 87.1 mphSL87 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 36.6% 310 106 qualified
FC 19.6% 166 105 limited sample
CB 17.8% 151 105 limited sample
SI 17.1% 145 104 limited sample
SL 8.7% 74 112 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-0.92
K% Δ-0.004
Sample114.0 IP

negative regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings75.8----
Batters Faced306----
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%