Mithrandir Metrics
BAL 2026-07-09 Refreshed Sep 1 06:00 AM ET
Section III · Betting · Player detail · 2026-07-09

Gunnar Henderson

BAL · Hitter · bats L · age 25
IN · 3 Negative regression Hitter-Friendly
MatchupBAL vs CHCDavid Peterson
Sample2264.0career MLB AB
PROPS 3 available PERCENTILES 27 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 16.5
F 14.9
V 14.8
Model 20.5% Market 16.4% Gap +3.4pp
FanDuel 485 tracking Open board
Total Bases 0.5
P 67.9
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 67.9% Market 80.8% Gap +11.9pp
FanDuel -105 tracking Open board
Hits 1.5
P 26.6
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 26.6% Market -- Gap +8.5pp
FanDuel 185 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%5.1%
50 -33 vs proj
Exit velocity89.6
68
Hard-hit%44.7%
75 -19 vs proj
xBA0.314
41
xSLG0.518
53
xwOBA0.306
48 -44 vs proj
BB%8.3%
46 -20 vs proj
Bat speed72.7
85
K%22.5%
51
Defense · percentile strip
Arm Runs0.1 · SS
66
Arm Strength93.9 · SS
91
Outs Above Avg3.0 · SS
85
Range Runs2.4 · SS
74
Baserunning · percentile strip
Base Running Runs1.3 · SS
79
Bolts2.0 · SS
34
SB Success Rate85.7% · SS
67
Sprint Speed28.3 · SS
77
Mithrandir+ · percentile strip
Avoids Bad ChasesST 62.9%
36
Avoids Bad TakesHPT 27.7%
26
Correct Decisions64.5%
33
SEAGER+ Plate Discipline96
27
Resists Breaking - horizontalwOBA 0.298 · small sample
small sample
Resists Breaking - verticalwOBA 0.296 · thin sample
thin sample
Resists ChangeupwOBA 0.320
Small sample
Resists Cutters + splitterswOBA 0.342 · thin sample
thin sample
Resists FastballwOBA 0.296
Small sample
Resists SinkerwOBA 0.348
Small sample

Context

projection · regression · matchup
Projected range0.308 to 0.415
RegressionNegative · -0.031
Opposing pitcherDavid Peterson
EnvironmentHitter-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)