Mithrandir Metrics
AZ 2026-08-27 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-08-27

Ketel Marte

AZ · Hitter · bats L · age 33
IL10 · 2 Positive regression Pitcher-Friendly
MatchupAZ vs SFLanden Roupp
Sample--career MLB AB
PROPS 2 available PERCENTILES 23 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 12.0
F 12.1
V 14.5
Model 16.9% Market 21.1% Gap -4.1pp
BetMGM 375 tracking Open board
Total Bases 0.5
P 66.8
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 82.4% Market 83.5% Gap +16.7pp
BetMGM -505 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
Hitting · percentile strip
Barrel%7.8%
86
Exit velocity90.0
76
Hard-hit%42.8%
71
xBA0.334
68
xSLG0.563
69
xwOBA0.351
90
BB%7.9%
43 -26 vs proj
Bat speed73.4
91
K%14.7%
89
Defense · percentile strip
Arm Runs0.1 · 2B
62
Arm Strength91.5 · 2B
81
Outs Above Avg2.0 · 2B
80
Range Runs1.6 · 2B
70
Baserunning · percentile strip
Base Running Runs0.4 · 2B
53
Bolts1.0 · 2B
12
Sprint Speed26.6 · 2B
29
SB Success Rate100.0% · 2B
Small sample
Mithrandir+ · percentile strip
Resists Breaking - horizontalwOBA 0.295 · small sample
small sample
Resists Breaking - verticalwOBA 0.290 · thin sample
thin sample
Resists ChangeupwOBA 0.259
Small sample
Resists Cutters + splitterswOBA 0.315 · thin sample
thin sample
Resists FastballwOBA 0.338
Small sample
Resists SinkerwOBA 0.431
Small sample

Context

projection · regression · matchup
Projected range0.310 to 0.402
RegressionPositive · 0.009
Opposing pitcherLanden Roupp
EnvironmentPitcher-Friendly
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)