Mithrandir Metrics
BAL 2026-07-09 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-07-09

Ryan Mountcastle

BAL · Hitter · bats R · age 29
Projected · 7 Hitter-Friendly
MatchupBAL vs CHCDavid Peterson
Sample--career MLB AB
PROPS 2 available PERCENTILES 12 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 14.7
F 16.3
V 13.8
Model 18.9% Market 10.4% Gap +8.2pp
DraftKings 830 tracking Open board
Total Bases 0.5
P 64.4
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 73.7% Market 74.7% Gap +10.3pp
BetMGM -295 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
Defense · percentile strip
Outs Above Avg0.0 · 1B
54 Regression applied
Range Runs0.1 · 1B
Small sample
Baserunning · percentile strip
Sprint Speed26.2 · 1B
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 53.6%
Small sample
Avoids Bad TakesHPT 25.0%
Small sample
Correct Decisions66.7%
Small sample
Resists Breaking - horizontalwOBA 0.288 · small sample
small sample
Resists ChangeupwOBA 0.276
Small sample
Resists Cutters + splitterswOBA 0.340 · thin sample
thin sample
Resists FastballwOBA 0.338
Small sample
Resists SinkerwOBA 0.366
Small sample
SEAGER+ Plate Discipline90
Small sample

Context

projection · regression · matchup
Projected range0.292 to 0.365
RegressionNo current flag
Opposing pitcherDavid Peterson
EnvironmentHitter-Friendly
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)