Mithrandir Metrics
MIA 2026-07-29 Refreshed Sep 1 06:00 AM ET
Section III · Betting · Player detail · 2026-07-29

Heriberto Hernández

MIA · Hitter · bats R · age 27
IN · 2 Negative regression Neutral
MatchupMIA vs PHIJesús Luzardo
Sample505.0career MLB AB
PROPS 2 available PERCENTILES 26 rows LINEUPS confirmed artifact 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 11.3
F 9.6
V 9.8
Model 17.0% Market 12.0% Gap +4.6pp
DraftKings 705 tracking Open board
Total Bases 0.5
P 55.5
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 66.0% Market 67.2% Gap +11.7pp
BetMGM -205 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%8.2%
88 +24 vs proj
Exit velocity92.3
94
Hard-hit%51.7%
94 +27 vs proj
xBA0.360
84
xSLG0.705
95
xwOBA0.357
89 +21 vs proj
BB%9.6%
65
Bat speed72.5
84
K%25.7%
33
Defense · percentile strip
Arm Runs-1.8 · LF
9
Arm Strength97.2 · LF
82
Outs Above Avg2.0 · LF
89
Range Runs1.1 · LF
61
Baserunning · percentile strip
Base Running Runs0.5 · LF
56
Sprint Speed28.6 · LF
84
SB Success Rate100.0% · LF
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 69.1%
Small sample
Avoids Bad TakesHPT 23.8%
Small sample
Correct Decisions68.3%
Small sample
Resists Breaking - horizontalwOBA 0.317 · small sample
small sample
Resists Breaking - verticalwOBA 0.292 · thin sample
thin sample
Resists ChangeupwOBA 0.287
Small sample
Resists Cutters + splitterswOBA 0.309 · thin sample
thin sample
Resists FastballwOBA 0.306
Small sample
Resists SinkerwOBA 0.352
Small sample
SEAGER+ Plate Discipline105
Small sample

Context

projection · regression · matchup
Projected range0.266 to 0.365
RegressionNegative · -0.018
Opposing pitcherJesús Luzardo
EnvironmentNeutral
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)