Mithrandir Metrics
WSH 2026-08-28 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-08-28

Keibert Ruiz

WSH · Hitter · bats L · age 28
IN · 5 Negative regression Neutral
MatchupWSH vs MIAEury Pérez
Sample2012.0career MLB AB
PROPS 3 available PERCENTILES 24 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 9.5
F 11.9
V 9.6
Model 14.2% Market 9.8% Gap +4.0pp
DraftKings 880 tracking Open board
Total Bases 0.5
P 56.1
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 67.1% Market 68.2% Gap +12.2pp
BetMGM -215 tracking Open board
Hits 0.5
P 16.3
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 16.3% Market -- Gap +4.2pp
FanDuel 390 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%3.7%
31
Exit velocity87.7
48
Hard-hit%36.8%
42
xBA0.275
12
xSLG0.411
17
xwOBA0.284
28
BB%5.3%
16
Bat speed66.1
13
K%10.2%
98
Defense · percentile strip
Blocking Runs-0.2 · C
45
Catcher Throwing-1.5 · C
13
Framing Runs2.1 · C
73
Pop Time2.0 · C
4
Baserunning · percentile strip
Sprint Speed25.1 · C
6
Mithrandir+ · percentile strip
Avoids Bad ChasesST 61.7%
Small sample
Avoids Bad TakesHPT 29.5%
Small sample
Correct Decisions63.6%
Small sample
Resists Breaking - horizontalwOBA 0.332 · small sample
small sample
Resists Breaking - verticalwOBA 0.259 · thin sample
thin sample
Resists ChangeupwOBA 0.272
Small sample
Resists Cutters + splitterswOBA 0.354 · thin sample
thin sample
Resists FastballwOBA 0.362
Small sample
Resists SinkerwOBA 0.342
Small sample
SEAGER+ Plate Discipline93
Small sample

Context

projection · regression · matchup
Projected range0.279 to 0.352
RegressionNegative · -0.066
Opposing pitcherEury Pérez
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)