Mithrandir Metrics
BOS 2026-08-12 Refreshed Sep 1 06:00 AM ET
Section III · Betting · Player detail · 2026-08-12

Willson Contreras

BOS · Hitter
IN · 4 Negative regression Neutral
MatchupBOS vs TORJosé Soriano
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 0.065, 14d stable. This flags probability calibration, not a blanket model failure.
Strikeouts · Valinor calibration review Last 14d ECE 0.079, 14d error rising. This flags probability calibration, not a blanket model failure.
Total Bases · Palantir calibration review Last 14d ECE 0.047, 14d error rising. This flags probability calibration, not a blanket model failure.
Pitcher Outs · Palantir calibration review Last 14d ECE 0.064, 14d stable. This flags probability calibration, not a blanket model failure.
Tonight's props · all markets for this player
Home Run 0.5
P 12.8
F 13.2
V 12.2
Model 15.4% Market 15.3% Gap -0.5pp
DraftKings 530 tracking Open board
Total Bases 0.5
P 62.8
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 75.8% Market 76.7% Gap +13.9pp
BetMGM -330 tracking Open board
Hits 0.5
P 24.8
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 24.8% Market -- Gap +7.0pp
FanDuel 420 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%8.4%
88
Exit velocity90.6
83
Hard-hit%46.4%
83
xBA0.383
96
xSLG0.731
97
xwOBA0.387
99
BB%10.6%
73 +17 vs proj
Bat speed74.6
97
K%25.2%
34
Defense · percentile strip
Outs Above Avg-1.0 · 1B
27
Range Runs-0.3 · 1B
48
Baserunning · percentile strip
Base Running Runs-2.2 · 1B
8
SB Success Rate50.0% · 1B
5
Sprint Speed27.3 · 1B
48

Context

projection · regression · matchup
Projected range--
RegressionNegative · -0.038
Opposing pitcherJosé Soriano
EnvironmentNeutral
Lane calibration receipts
Lane Health 2026-09-01
Palantir 17901 props Brier 0.117 ECE 0.008 14d stable
Fangorn 17901 props Brier 0.118 ECE 0.009 14d stable
Valinor 12243 props Brier 0.112 ECE 0.005 14d stable
Palantir 1577 props Brier 0.247 ECE 0.006 14d stable
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 1073 props Brier 0.247 ECE 0.016 14d error rising
Palantir 8544 props Brier 0.238 ECE 0.047 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 673 props Brier 0.163 ECE 0.031 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 891 props Brier 0.256 ECE 0.060 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)