Mithrandir Metrics
MIL 2026-09-08 Refreshed Sep 11 06:00 AM ET
Section III · Betting · Player detail · 2026-09-08

William Contreras

MIL · Hitter · bats R · age 29
IN · 4 Negative regression Neutral
MatchupMIL vs CHCDavid Peterson
Sample2721.0career MLB AB
PROPS 3 available PERCENTILES 20 rows LINEUPS confirmed artifact 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 12.8
F 13.2
V 12.0
Model 18.8% Market 13.0% Gap +5.3pp
DraftKings 645 tracking Open board
Total Bases 0.5
P 64.9
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 80.9% Market 81.8% Gap +16.9pp
BetMGM -450 tracking Open board
Hits 1.5
P 31.4
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 31.4% Market -- Gap +3.7pp
FanDuel 260 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%6.6%
75
Exit velocity90.4
83
Hard-hit%44.5%
78
xBA0.309
38
xSLG0.520
57
xwOBA0.332
78
BB%9.0%
57 -16 vs proj
Bat speed71.6
76
K%14.6%
89 +17 vs proj
Defense · percentile strip
Blocking Runs-0.8 · C
22
Catcher Throwing3.0 · C
95
Framing Runs-4.2 · C
12
Pop Time1.9 · C
65
Baserunning · percentile strip
Base Running Runs-2.7 · C
8
Sprint Speed26.0 · C
17
SB Success Rate33.3% · C
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 68.3%
64
Avoids Bad TakesHPT 20.9%
85
Correct Decisions69.3%
81
SEAGER+ Plate Discipline108
83

Context

projection · regression · matchup
Projected range0.294 to 0.387
RegressionNegative · -0.025
Opposing pitcherDavid Peterson
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)