Mithrandir Metrics
KC 2026-07-10 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-07-10

Michael Massey

KC · Hitter · bats L · age 28
IN · 5 Negative regression Neutral
MatchupKC vs BAL--
Sample1412.0career MLB AB
PROPS 1 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 --
Home Run · tracking

No production board publishes this player-market cell today.

Total Bases --
Total Bases · tracking

No production board publishes this player-market cell today.

Hits 0.5
P 98.0
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 98.0% Market -- Gap +32.4pp
FanDuel 310 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%5.5%
56
Exit velocity89.4
65
Hard-hit%42.3%
64 +22 vs proj
xBA0.304
30
xSLG0.519
53
xwOBA0.309
52
BB%5.5%
18
Bat speed69.9
53
K%17.0%
81
Defense · percentile strip
Arm Runs-0.1 · 2B
18
Arm Strength85.2 · 2B
38
Outs Above Avg9.0 · 2B
98
Range Runs6.6 · 2B
97
Baserunning · percentile strip
Base Running Runs-1.0 · 2B
18
Sprint Speed26.8 · 2B
34
SB Success Rate100.0% · 2B
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 59.9%
Small sample
Avoids Bad TakesHPT 27.6%
Small sample
Correct Decisions62.8%
Small sample
Resists Breaking - horizontalwOBA 0.272 · small sample
small sample
Resists Breaking - verticalwOBA 0.301 · thin sample
thin sample
Resists ChangeupwOBA 0.297
Small sample
Resists Cutters + splitterswOBA 0.340 · thin sample
thin sample
Resists FastballwOBA 0.324
Small sample
Resists SinkerwOBA 0.357
Small sample
SEAGER+ Plate Discipline94
Small sample

Context

projection · regression · matchup
Projected range0.275 to 0.351
RegressionNegative · -0.011
Opposing pitcher--
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)