Mithrandir Metrics
SF 2026-07-19 Refreshed Jul 20 06:00 AM ET
Section III · Betting · Player detail · 2026-07-19

Rafael Devers

SF · Hitter · bats L · age 30
IN · 4 Negative regression Pitcher-Friendly
MatchupSF vs SEALogan Gilbert
Sample4784.0career MLB AB
PROPS 3 available PERCENTILES 24 rows LINEUPS confirmed artifact NO PROSE templated rows only
Palantir calibration review active Last 14d ECE 0.097, 14d error rising. This flags probability calibration, not a blanket model failure.
Valinor calibration review active Last 14d ECE 0.076, 14d stable. This flags probability calibration, not a blanket model failure.
Palantir calibration review active Last 14d ECE 0.065, 14d error rising. This flags probability calibration, not a blanket model failure.
Palantir calibration review active 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 0.5
P 14.9
F 12.2
V 14.9
Model 19.1% Market 20.8% Gap -1.7pp
BetMGM 380 tracking Open board
Total Bases 0.5
P 66.3
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 66.3% Market 78.0% Gap +11.2pp
FanDuel 160 tracking Open board
Hits 0.5
P 20.9
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 20.9% Market -- Gap +2.2pp
FanDuel 420 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%7.6%
83
Exit velocity92.1
93
Hard-hit%50.4%
92
xBA0.334
63
xSLG0.660
88
xwOBA0.325
66 -24 vs proj
BB%9.0%
56 -30 vs proj
Bat speed70.4
62
K%27.6%
24 -16 vs proj
Defense · percentile strip
Outs Above Avg-1.0 · 1B
28
Range Runs-0.6 · 1B
41
Baserunning · percentile strip
Base Running Runs-0.8 · 1B
22
Bolts1.0 · 1B
15
Sprint Speed26.1 · 1B
20
Mithrandir+ · percentile strip
Avoids Bad ChasesST 64.9%
46
Avoids Bad TakesHPT 25.0%
53
Correct Decisions67.6%
64
SEAGER+ Plate Discipline100
47
Resists Breaking - horizontalwOBA 0.264 · small sample
small sample
Resists Breaking - verticalwOBA 0.280 · thin sample
thin sample
Resists ChangeupwOBA 0.261
Small sample
Resists Cutters + splitterswOBA 0.389 · thin sample
thin sample
Resists FastballwOBA 0.325
Small sample
Resists SinkerwOBA 0.368
Small sample

Context

projection · regression · matchup
Projected range0.307 to 0.398
RegressionNegative · -0.023
Opposing pitcherLogan Gilbert
EnvironmentPitcher-Friendly
Lane calibration receipts
Lane Health 2026-07-20
Palantir 10059 props Brier 0.124 ECE 0.010 14d stable
Fangorn 10059 props Brier 0.124 ECE 0.011 14d stable
Valinor 4464 props Brier 0.118 ECE 0.006 14d stable
Palantir 860 props Brier 0.248 ECE 0.035 14d error rising
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 356 props Brier 0.249 ECE 0.041 14d stable
Palantir 4739 props Brier 0.240 ECE 0.076 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 288 props Brier 0.176 ECE 0.047 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 462 props Brier 0.260 ECE 0.055 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)