Mithrandir Metrics
Pitcher projection 2026 Refreshed Jul 18 06:00 AM ET
Pitcher projection / CIN · 2026

Johnson, Pierce

Late-inning arm with usable miss-bat shape

Primary
24.4% K%
Range
18.4% to 32.2%
Live Δ
yes
Team CIN Archetype Balanced reliever 2 Age 35 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.

2026-07-18
31
Pitching
percentile
Pitching9 metrics
31
Arsenal3 metrics
54
Rolling projection

Preseason / current pace / Bayesian update

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

2026-07-18
ERA preseason3.83
ERA current pace4.23
ERA rolling p503.97
Observed weight35%
ERA
2.46 3.18 3.97 4.76 5.48
FIP
3.74 4.10 4.50 4.90 5.26
K%
18.4% 20.6% 23.1% 25.6% 27.8%
BB%
7.3% 8.6% 10.0% 11.5% 12.8%
Current percentile strip

Actual percentile with projection tick

100th = best in MLB.

2026-07-18
Pitching · percentile strip
WHIP1.35
45
ERA4.23
43
BB%10.6%
28
K%19.7%
31 -32 vs proj
xwOBA allowed0.377
6 -37 vs proj
Barrel allowed16.7%
1 -38 vs proj
Fastball velo95.3
65
Hard-hit allowed43.3%
22
Whiff%21.2%
35 -22 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+.

2026-07-18
Curveball Stuff+105
87
Fastball Stuff+98
20
Mithrandir Stuff+102
54
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.

3Pitches 2026Season 61%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 Johnson, Pierce · Live snapshot series; true 50/100 PA windows require PA-level logs LG AVG 0.314 0.377 2026-07-07: 0.3862026-07-08: 0.3872026-07-09: 0.3802026-07-10: 0.3802026-07-11: 0.3802026-07-12: 0.3802026-07-13: 0.3802026-07-14: 0.3772026-07-15: 0.3772026-07-16: 0.3772026-07-17: 0.3772026-07-18: 0.377 2026-07-07 2026-07-18 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 Johnson, Pierce · Aggregate zone metrics; not pitch-by-pitch locations Edge: 36%36%Zone: 49%49%Whiff: 21%21%Called strike: 18%18%First pitch strike: 52%52%Hard hit allowed: 43%43% 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 Johnson, Pierce · 2026 arsenal snapshot Curveball: 61.3%4-Seam Fastball: 37.5%Cutter: 1.1% CU61% · 86 mphprimary pitch CU 61%FF 38%FC 1% MITHRANDIR · CHARTS
Mithrandir Metrics PITCH MOVEMENT Parameterized Mithrandir chart rendered as SVG for templates and exports. Pitch Arsenal Johnson, Pierce · 2026 arsenal snapshot 12″24″36″48″ Curveball: 61% usage, 1″ horizontal break, 42″ drop, 86.1 mphCU86 mph4-Seam Fastball: 38% usage, 1″ horizontal break, 14″ drop, 95.3 mphFF95 mphCutter: 1% usage, 0″ horizontal break, 21″ drop, 92.6 mphFC93 mph less drop ↑ more drop ↓ · horizontal break ↔ · dot size = usage · break incl. gravity MITHRANDIR · CHARTS
PitchUsagePitchesStuff+Status
CB 65.2% 255 105 qualified
FB 34.8% 136 98 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 (0.310 vs 0.286 xwOBA allowed split).
2
templated note
Volume stays relief-shaped even when the bat-miss traits are strong.
3
templated note
Home park slightly inflates the home-run risk band.
4
templated note
Primary mix entering the season: Curveball 72%, 4-Seam Fastball 23%, Cutter 5%.
Live context

Current-season signal

ERA Δ+0.24
K% Δ-0.047
Sample30.3 IP

positive regression

Projection table

Point projection and range

MetricPointRangeHalf-width
Innings39.5----
Batters Faced169----
K%24.4%18.4% to 32.2%+/- 6.9%
BB%9.6%6.4% to 14.0%+/- 3.8%
Whiff%24.0%19.7% to 30.4%+/- 5.3%
HR/91.300.36 to 2.26+/- 0.95
xwOBA Against0.3210.252 to 0.393+/- 0.070
Barrel% Allowed8.4%4.5% to 12.8%+/- 4.2%
ERA4.021.99 to 6.09+/- 2.05
FIP4.062.55 to 4.61+/- 1.03
WHIP1.2711.013 to 1.758+/- 0.373
Platoon / Shape
vs LHH

616 career BF

xwOBA0.310
K%22.6%
BB%11.7%
Barrel9.1%
vs RHH

814 career BF

xwOBA0.286
K%23.8%
BB%7.5%
Barrel8.5%