Mithrandir Metrics
PHI 2026-07-28 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-07-28

Brandon Marsh

PHI · Hitter · bats L · age 29
IN · 5 Negative regression Neutral
MatchupPHI vs MIASandy Alcantara
Sample2235.0career MLB AB
PROPS 3 available PERCENTILES 26 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 11.2
F 14.9
V 9.9
Model 17.5% Market 11.0% Gap +6.1pp
DraftKings 780 tracking Open board
Total Bases 0.5
P 61.8
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 74.8% Market 75.6% Gap +13.8pp
BetMGM -310 tracking Open board
Hits 1.5
P 22.7
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 22.7% Market -- Gap +7.6pp
FanDuel 230 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%6.5%
73
Exit velocity89.5
69
Hard-hit%45.7%
80
xBA0.373
90
xSLG0.608
79
xwOBA0.318
62
BB%5.5%
17 -51 vs proj
Bat speed69.7
51
K%26.3%
31
Defense · percentile strip
Arm Runs-3.8 · LF
1
Arm Strength100.5 · LF
95
Outs Above Avg0.0 · LF
47
Range Runs-1.6 · LF
30
Baserunning · percentile strip
Base Running Runs1.6 · LF
79
SB Success Rate88.9% · LF
76
Sprint Speed28.1 · LF
69
Mithrandir+ · percentile strip
Avoids Bad ChasesST 59.3%
22
Avoids Bad TakesHPT 29.2%
16
Correct Decisions63.9%
28
SEAGER+ Plate Discipline91
13
Resists Breaking - horizontalwOBA 0.267 · small sample
small sample
Resists Breaking - verticalwOBA 0.337 · thin sample
thin sample
Resists ChangeupwOBA 0.271
Small sample
Resists Cutters + splitterswOBA 0.323 · thin sample
thin sample
Resists FastballwOBA 0.384
Small sample
Resists SinkerwOBA 0.391
Small sample

Context

projection · regression · matchup
Projected range0.286 to 0.377
RegressionNegative · -0.045
Opposing pitcherSandy Alcantara
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)