Mithrandir Metrics
SEA 2026-08-06 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-08-06

Josh Naylor

SEA · Hitter · bats L · age 29
IN · 4 Negative regression Pitcher-Friendly
MatchupSEA vs DETFramber Valdez
Sample--career MLB AB
PROPS 3 available PERCENTILES 14 rows LINEUPS confirmed artifact NO PROSE templated rows only
Strikeouts · Palantir calibration review Last 14d ECE 0.053, 14d stable. This flags probability calibration, not a blanket model failure.
Strikeouts · Valinor calibration review Last 14d ECE 0.068, 14d stable. This flags probability calibration, not a blanket model failure.
Total Bases · Palantir calibration review Last 14d ECE 0.053, 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 12.7
V 11.5
Model 15.3% Market 15.6% Gap -0.8pp
DraftKings 520 tracking Open board
Total Bases 0.5
P 64.4
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 77.9% Market 79.0% Gap +14.5pp
BetMGM -375 tracking Open board
Hits 0.5
P 22.8
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 22.8% Market -- Gap +1.2pp
FanDuel 350 tracking Open board
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%3.4%
28 -30 vs proj
Exit velocity87.3
40
Hard-hit%35.7%
35 -25 vs proj
xBA0.317
47
xSLG0.450
30
xwOBA0.319
67
BB%7.5%
38
Bat speed68.2
30
K%12.6%
95
Defense · percentile strip
Outs Above Avg0.0 · 1B
44
Range Runs0.1 · 1B
54
Baserunning · percentile strip
Base Running Runs-1.0 · 1B
21
SB Success Rate94.7% · 1B
87
Sprint Speed24.6 · 1B
3

Context

projection · regression · matchup
Projected range0.279 to 0.366
RegressionNegative · -0.002
Opposing pitcherFramber Valdez
EnvironmentPitcher-Friendly
Lane calibration receipts
Lane Health 2026-09-02
Palantir 18081 props Brier 0.118 ECE 0.008 14d stable
Fangorn 18081 props Brier 0.118 ECE 0.009 14d stable
Valinor 12423 props Brier 0.112 ECE 0.004 14d stable
Palantir 1591 props Brier 0.247 ECE 0.006 14d stable
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 1087 props Brier 0.248 ECE 0.016 14d stable
Palantir 8613 props Brier 0.238 ECE 0.047 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 683 props Brier 0.163 ECE 0.031 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 900 props Brier 0.256 ECE 0.059 14d error falling
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)