Mithrandir Metrics
MIN 2026-08-18 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-08-18

Matt Wallner

MIN · Hitter · bats L · age 29
OUT · 2 Negative regression Neutral
MatchupMIN vs ATLTyler Mahle
Sample--career MLB AB
PROPS 2 available PERCENTILES 18 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 13.1
F 13.3
V 14.8
Model 17.2% Market 20.0% Gap -2.8pp
BetMGM 400 tracking Open board
Total Bases 0.5
P 56.5
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 67.6% Market 68.8% Gap +12.2pp
BetMGM -220 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%6.0%
67
Exit velocity89.2
66
Hard-hit%42.3%
68
xBA0.358
85
xSLG0.597
79
xwOBA0.281
25
BB%7.9%
43
Bat speed72.9
89
K%37.1%
2
Defense · percentile strip
Arm Runs-1.8 · RF
11
Arm Strength99.3 · RF
92
Outs Above Avg-4.0 · RF
4
Range Runs-3.3 · RF
17
Baserunning · percentile strip
Sprint Speed26.0 · RF
17
Mithrandir+ · percentile strip
Avoids Bad ChasesST 60.2%
Small sample
Avoids Bad TakesHPT 24.2%
Small sample
Correct Decisions64.4%
Small sample
SEAGER+ Plate Discipline97
Small sample

Context

projection · regression · matchup
Projected range0.289 to 0.384
RegressionNegative · -0.041
Opposing pitcherTyler Mahle
EnvironmentNeutral
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)