Mithrandir Metrics
SF 2026-05-17 Refreshed Sep 1 06:00 AM ET
Section III · Betting · Player detail · 2026-05-17

Rafael Devers

SF · Hitter
IN · 2 Negative regression Pitcher-Friendly
MatchupSF vs ATHJeffrey Springs
Sample4588.0career MLB AB
PROPS 2 available PERCENTILES 13 rows LINEUPS tracking; not posted NO PROSE templated rows only
Strikeouts · Palantir calibration review Last 14d ECE 0.065, 14d stable. This flags probability calibration, not a blanket model failure.
Strikeouts · Valinor calibration review Last 14d ECE 0.079, 14d error rising. This flags probability calibration, not a blanket model failure.
Total Bases · Palantir calibration review Last 14d ECE 0.047, 14d error rising. This flags probability calibration, not a blanket model failure.
Pitcher Outs · Palantir calibration review Last 14d ECE 0.064, 14d stable. This flags probability calibration, not a blanket model failure.
Tonight's props · all markets for this player
Home Run 0.5
P 13.2
F 13.6
V 11.6
Model 17.4% Market 20.2% Gap -2.8pp
BetMGM 395 tracking Open board
Total Bases 1.5
P 64.1
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 64.1% Market 72.9% Gap -3.5pp
FanDuel 115 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%5.6%
53 -32 vs proj
Exit velocity90.0
68
Hard-hit%45.1%
70 -25 vs proj
xBA0.317
40
xSLG0.533
58
xwOBA0.265
15 -70 vs proj
BB%6.6%
25 -53 vs proj
Bat speed70.1
59
K%31.0%
10 -27 vs proj
Defense · percentile strip
Outs Above Avg-2.0 · 1B
19
Range Runs-1.7 · 1B
22
Baserunning · percentile strip
Base Running Runs-1.0 · 1B
9
Sprint Speed25.7 · 1B
15

Context

projection · regression · matchup
Projected range--
RegressionNegative · -0.054
Opposing pitcherJeffrey Springs
EnvironmentPitcher-Friendly
Lane calibration receipts
Lane Health 2026-09-01
Palantir 17901 props Brier 0.117 ECE 0.008 14d stable
Fangorn 17901 props Brier 0.118 ECE 0.009 14d stable
Valinor 12243 props Brier 0.112 ECE 0.005 14d stable
Palantir 1577 props Brier 0.247 ECE 0.006 14d stable
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 1073 props Brier 0.247 ECE 0.016 14d error rising
Palantir 8544 props Brier 0.238 ECE 0.047 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 673 props Brier 0.163 ECE 0.031 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 891 props Brier 0.256 ECE 0.060 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)