Mithrandir Metrics
ATH 2026-05-31 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-05-31

Brent Rooker

ATH · Hitter
IN · 2 Negative regression Neutral
MatchupATH vs NYYWill Warren
Sample2025.0career MLB AB
PROPS 3 available PERCENTILES 24 rows LINEUPS tracking; not posted 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 20.5
F 15.7
V 15.7
Model 21.3% Market 21.0% Gap -0.4pp
DraftKings 360 tracking Open board
Total Bases 0.5
P 65.2
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 65.2% Market 74.3% Gap +2.5pp
FanDuel 115 tracking Open board
Hits 1.5
P 2.0
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 2.0% Market -- Gap +4.8pp
FanDuel 10000 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%8.9%
88
Exit velocity89.5
62
Hard-hit%41.0%
53 -31 vs proj
xBA0.312
38
xSLG0.629
80
xwOBA0.299
39 -47 vs proj
BB%9.5%
60
Bat speed72.4
83
K%30.7%
12 -23 vs proj
Defense · percentile strip
Arm Runs-0.1 · RF
Small sample
Outs Above Avg0.0 · RF
64 Regression applied
Range Runs0.0 · RF
Small sample
Baserunning · percentile strip
Sprint Speed27.7 · DH
61
SB Success Rate100.0% · DH
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 64.6%
Small sample
Avoids Bad TakesHPT 20.1%
Small sample
Correct Decisions67.1%
Small sample
Resists Breaking - horizontalwOBA 0.275 · small sample
small sample
Resists Breaking - verticalwOBA 0.286 · thin sample
thin sample
Resists ChangeupwOBA 0.258
Small sample
Resists Cutters + splitterswOBA 0.339 · thin sample
thin sample
Resists FastballwOBA 0.329
Small sample
Resists SinkerwOBA 0.346
Small sample
SEAGER+ Plate Discipline104
Small sample

Context

projection · regression · matchup
Projected range--
RegressionNegative · -0.032
Opposing pitcherWill Warren
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)