Mithrandir Metrics
SEA 2026-09-11 Refreshed Sep 11 06:00 AM ET
Section III · Betting · Player detail · 2026-09-11

Josh Naylor

SEA · Hitter · bats L · age 29
IN · 4 Negative regression Neutral
MatchupSEA vs ATHJeffrey Springs
Sample3125.0career MLB AB
PROPS 2 available PERCENTILES 24 rows LINEUPS tracking; not posted NO PROSE templated rows only
Strikeouts · Palantir calibration review Last 14d ECE 0.060, 14d stable. This flags probability calibration, not a blanket model failure.
Strikeouts · Valinor calibration review Last 14d ECE 0.063, 14d stable. This flags probability calibration, not a blanket model failure.
Hits · Palantir calibration review Last 14d ECE 0.062, 14d error rising. This flags probability calibration, not a blanket model failure.
Tonight's props · all markets for this player
Home Run 0.5
P 12.2
F 12.5
V 13.2
Model 17.6% Market 15.4% Gap +1.6pp
FanDuel 525 tracking Open board
Total Bases 0.5
P 63.5
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 78.6% Market 79.6% Gap +16.1pp
BetMGM -390 tracking Open board
Hits --
Hits · tracking

No production board publishes this player-market cell today.

RBI --
RBI · no production board

No production board publishes this player-market cell today.

Underlying skill · actual percentile with projection tick

Percentile strip

100th = best in MLB
Hitting · percentile strip
Barrel%3.3%
27 -30 vs proj
Exit velocity86.7
37
Hard-hit%35.3%
35 -28 vs proj
xBA0.316
47
xSLG0.446
30
xwOBA0.312
60
BB%6.8%
31 -15 vs proj
Bat speed68.0
29
K%13.0%
95
Defense · percentile strip
Outs Above Avg2.0 · 1B
79
Range Runs1.3 · 1B
68
Baserunning · percentile strip
Base Running Runs-2.1 · 1B
13
SB Success Rate92.0% · 1B
85
Sprint Speed24.3 · 1B
1
Mithrandir+ · percentile strip
Avoids Bad ChasesST 58.3%
17
Avoids Bad TakesHPT 25.0%
52
Correct Decisions62.8%
21
Resists FastballwOBA 0.377
8
SEAGER+ Plate Discipline94
20
Resists Breaking - horizontalwOBA 0.273 · small sample
small sample
Resists Breaking - verticalwOBA 0.256 · thin sample
thin sample
Resists ChangeupwOBA 0.270
Small sample
Resists Cutters + splitterswOBA 0.354 · thin sample
thin sample
Resists SinkerwOBA 0.329
Small sample

Context

projection · regression · matchup
Projected range0.279 to 0.366
RegressionNegative · -0.006
Opposing pitcherJeffrey Springs
EnvironmentNeutral
Lane calibration receipts
Lane Health 2026-09-11
Palantir 19641 props Brier 0.118 ECE 0.006 14d stable
Fangorn 19641 props Brier 0.118 ECE 0.006 14d stable
Valinor 13965 props Brier 0.113 ECE 0.003 14d stable
Palantir 1750 props Brier 0.248 ECE 0.010 14d stable
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 1246 props Brier 0.249 ECE 0.020 14d stable
Palantir 9432 props Brier 0.238 ECE 0.046 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 756 props Brier 0.167 ECE 0.038 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 986 props Brier 0.256 ECE 0.054 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir tracking in progress (0 logged)
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)