Mithrandir Metrics
PIT 2026-09-11 Refreshed Sep 11 06:00 AM ET
Section III · Betting · Player detail · 2026-09-11

Spencer Horwitz

PIT · Hitter · bats L · age 29
IN · 6 Negative regression Pitcher-Friendly
MatchupPIT vs CHCShota Imanaga
Sample1089.0career MLB AB
PROPS 1 available PERCENTILES 23 rows LINEUPS tracking; not posted NO PROSE templated rows only
Strikeouts · Palantir calibration review Last 14d ECE 0.060, 14d stable. This flags probability calibration, not a blanket model failure.
Strikeouts · Valinor calibration review Last 14d ECE 0.063, 14d stable. This flags probability calibration, not a blanket model failure.
Hits · Palantir calibration review Last 14d ECE 0.062, 14d error rising. This flags probability calibration, not a blanket model failure.
Tonight's props · all markets for this player
Home Run --
Home Run · tracking

No production board publishes this player-market cell today.

Total Bases 0.5
P 41.7
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 48.0% Market 48.8% Gap +7.1pp
BetMGM 105 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%4.3%
42
Exit velocity86.7
38
Hard-hit%31.2%
21 -15 vs proj
xBA0.274
11
xSLG0.425
22
xwOBA0.310
58
BB%11.7%
86 +21 vs proj
Bat speed67.2
22
K%15.3%
88
Defense · percentile strip
Outs Above Avg-5.0 · 1B
8
Range Runs-3.7 · 1B
19
Baserunning · percentile strip
Sprint Speed24.8 · 1B
4
SB Success Rate100.0% · 1B
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 72.6%
86
Avoids Bad TakesHPT 26.8%
34
Correct Decisions67.3%
62
Resists FastballwOBA 0.334
62
SEAGER+ Plate Discipline106
77
Resists Breaking - horizontalwOBA 0.303 · small sample
small sample
Resists Breaking - verticalwOBA 0.301 · thin sample
thin sample
Resists ChangeupwOBA 0.281
Small sample
Resists Cutters + splitterswOBA 0.309 · thin sample
thin sample
Resists SinkerwOBA 0.353
Small sample

Context

projection · regression · matchup
Projected range0.299 to 0.352
RegressionNegative · -0.026
Opposing pitcherShota Imanaga
EnvironmentPitcher-Friendly
Lane calibration receipts
Lane Health 2026-09-11
Palantir 19641 props Brier 0.118 ECE 0.006 14d stable
Fangorn 19641 props Brier 0.118 ECE 0.006 14d stable
Valinor 13965 props Brier 0.113 ECE 0.003 14d stable
Palantir 1750 props Brier 0.248 ECE 0.010 14d stable
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 1246 props Brier 0.249 ECE 0.020 14d stable
Palantir 9432 props Brier 0.238 ECE 0.046 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 756 props Brier 0.167 ECE 0.038 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 986 props Brier 0.256 ECE 0.054 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)