Mithrandir Metrics
KC 2026-09-26 Refreshed Sep 26 06:00 AM ET
Section III · Betting · Player detail · 2026-09-26

Michael Massey

KC · Hitter · bats L · age 28
IN · 8 Negative regression Neutral
MatchupKC vs CLE--
Sample1614.0career MLB AB
PROPS 1 available PERCENTILES 26 rows LINEUPS confirmed artifact NO PROSE templated rows only
Strikeouts · Palantir calibration review Last 14d ECE 0.055, 14d stable. This flags probability calibration, not a blanket model failure.
Hits · Palantir calibration review Last 14d ECE 0.082, 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 +34.1pp
FanDuel 350 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%4.9%
52
Exit velocity88.3
54
Hard-hit%39.2%
55
xBA0.311
41
xSLG0.502
52
xwOBA0.306
53
BB%4.7%
12
Bat speed69.9
53
K%16.7%
83
Defense · percentile strip
Arm Runs-0.1 · 2B
16
Arm Strength85.2 · 2B
33
Outs Above Avg11.0 · 2B
96
Range Runs8.2 · 2B
93
Baserunning · percentile strip
Base Running Runs-1.8 · 2B
17
Sprint Speed26.7 · 2B
30
SB Success Rate100.0% · 2B
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 58.3%
16
Avoids Bad TakesHPT 28.6%
20
Correct Decisions62.7%
20
Resists FastballwOBA 0.313
89
SEAGER+ Plate Discipline91
12
Resists Breaking - horizontalwOBA 0.289 · small sample
small sample
Resists Breaking - verticalwOBA 0.304 · thin sample
thin sample
Resists ChangeupwOBA 0.284
Small sample
Resists Cutters + splitterswOBA 0.357 · thin sample
thin sample
Resists SinkerwOBA 0.355
Small sample

Context

projection · regression · matchup
Projected range0.275 to 0.351
RegressionNegative · -0.017
Opposing pitcher--
EnvironmentNeutral
Lane calibration receipts
Lane Health 2026-09-26
Palantir 21711 props Brier 0.118 ECE 0.004 14d stable
Fangorn 21711 props Brier 0.118 ECE 0.005 14d stable
Valinor 16023 props Brier 0.114 ECE 0.001 14d stable
Palantir 1947 props Brier 0.248 ECE 0.011 14d stable
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 1443 props Brier 0.248 ECE 0.008 14d stable
Palantir 10429 props Brier 0.238 ECE 0.039 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 850 props Brier 0.166 ECE 0.036 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 1088 props Brier 0.255 ECE 0.053 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)