Mithrandir Metrics
Pitcher projection 2026 Refreshed Sep 26 06:00 AM ET
Pitcher projection / TEX · 2026

Silseth, Chase

Run-prevention profile built on workable command

Primary
26.2% K%
Range
20.4% to 33.9%
Live Δ
yes
Team TEX Archetype Volatile contact Age 26 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.

2026-09-26
53
Pitching
percentile
Pitching9 metrics
61
Arsenal4 metrics
53
Rolling projection

Preseason / current pace / Bayesian update

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

2026-09-26
ERA preseason3.83
ERA current pace3.33
ERA rolling p503.56
Observed weight54%
ERA
2.29 2.89 3.56 4.23 4.83
FIP
2.49 3.13 3.83 4.54 5.17
K%
23.1% 24.8% 26.7% 28.6% 30.3%
BB%
9.2% 10.2% 11.2% 12.3% 13.2%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-09-26
Pitching · percentile strip
WHIP1.41
34
ERA3.33
75
BB%13.0%
10 -31 vs proj
K%27.1%
82
xwOBA allowed0.304
62
Barrel allowed9.0%
25
Fastball velo95.8
73
Hard-hit allowed31.9%
91
Whiff%30.3%
94 +26 vs proj
Mithrandir+

Stuff+ and arsenal context

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

2026-09-26
Fastball Stuff+101
37
Mithrandir Stuff+101
42
Sinker Stuff+101
43
Slider Stuff+107
89
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.

4Pitches 2026Season 42%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 Silseth, Chase · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.313 0.304 2026-09-12: 0.3152026-09-13: 0.3152026-09-14: 0.3152026-09-18: 0.3102026-09-19: 0.3102026-09-20: 0.3102026-09-21: 0.3062026-09-22: 0.3062026-09-23: 0.3062026-09-24: 0.3082026-09-25: 0.3082026-09-26: 0.304 2026-09-12 2026-09-26 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 Silseth, Chase · Aggregate zone metrics; not pitch-by-pitch locations Edge: 37%37%Zone: 45%45%Whiff: 30%30%Called strike: 15%15%First pitch strike: 54%54%Hard hit allowed: 32%32% 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 Silseth, Chase · 2026 arsenal snapshot 4-Seam Fastball: 41.9%Split-Finger: 25.0%Sweeper: 21.0%Sinker: 12.2% FF42% · 96 mphprimary pitch FF 42%FS 25%ST 21%SI 12% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Silseth, Chase · 2026 arsenal snapshot 12″24″36″48″ 4-Seam Fastball: 42% usage, 1″ horizontal break, 14″ drop, 95.9 mphFF96 mphSplit-Finger: 25% usage, 3″ horizontal break, 34″ drop, 88.1 mphFS88 mphSweeper: 21% usage, 6″ horizontal break, 38″ drop, 85.9 mphST86 mphSinker: 12% usage, 4″ horizontal break, 21″ drop, 95.7 mphSI96 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
FB 55.2% 275 101 qualified
SL 27.5% 137 107 limited sample
SI 17.3% 86 101 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
Needs the arsenal to hold up against lefties (0.276 vs 0.246 xwOBA allowed split).
2
templated note
Primary mix entering the season: 4-Seam Fastball 33%, Sweeper 28%, Split-Finger 22%.
Live context

Current-season signal

ERA Δ-0.44
K% Δ+0.009
Sample64.3 IP

positive regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings59.7----
Batters Faced267----
K%26.2%20.4% to 33.9%+/- 6.8%
BB%9.7%6.9% to 13.2%+/- 3.1%
Whiff%25.0%20.7% to 32.8%+/- 6.1%
HR/91.470.49 to 2.01+/- 0.76
xwOBA Against0.3010.240 to 0.323+/- 0.042
Barrel% Allowed9.0%3.6% to 12.6%+/- 4.5%
ERA3.771.62 to 5.21+/- 1.79
FIP4.012.51 to 6.29+/- 1.89
WHIP1.3091.009 to 1.553+/- 0.272
Platoon / Shape
vs LHH

236 career BF

xwOBA0.276
K%23.5%
BB%11.4%
Barrel10.0%
vs RHH

255 career BF

xwOBA0.246
K%26.0%
BB%7.6%
Barrel8.9%