Mithrandir Metrics
CIN 2026-05-30 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-05-30

Spencer Steer

CIN · Hitter · bats R · age 29
IN · 4 Negative regression Neutral
MatchupCIN vs ATLMartín Pérez
Sample1953.0career MLB AB
PROPS 3 available PERCENTILES 26 rows LINEUPS tracking; not posted NO PROSE templated rows only
Strikeouts · Palantir calibration review Last 14d ECE 0.053, 14d stable. This flags probability calibration, not a blanket model failure.
Strikeouts · Valinor calibration review Last 14d ECE 0.068, 14d stable. This flags probability calibration, not a blanket model failure.
Total Bases · Palantir calibration review Last 14d ECE 0.053, 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 18.6
F 17.2
V 17.2
Model 18.8% Market 14.4% Gap +3.9pp
FanDuel 570 tracking Open board
Total Bases 0.5
P 74.7
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 74.7% Market 72.2% Gap +2.5pp
FanDuel -305 tracking Open board
Hits 2.5
P 2.0
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 2.0% Market -- Gap +2.3pp
FanDuel 7500 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%9.5%
91 +48 vs proj
Exit velocity90.3
75
Hard-hit%41.8%
57 +18 vs proj
xBA0.362
82
xSLG0.666
88
xwOBA0.372
89 +34 vs proj
BB%8.2%
43 -17 vs proj
Bat speed69.6
50
K%19.9%
61
Defense · percentile strip
Arm Runs-1.2 · LF
14
Arm Strength91.3 · LF
38
Outs Above Avg0.0 · LF
45
Range Runs-0.2 · LF
49
Baserunning · percentile strip
Base Running Runs0.7 · LF
70
Sprint Speed28.4 · LF
81
SB Success Rate100.0% · LF
Small sample
Mithrandir+ · percentile strip
Avoids Bad ChasesST 70.8%
76
Avoids Bad TakesHPT 26.5%
36
Correct Decisions68.9%
76
SEAGER+ Plate Discipline104
69
Resists Breaking - horizontalwOBA 0.292 · small sample
small sample
Resists Breaking - verticalwOBA 0.294 · thin sample
thin sample
Resists ChangeupwOBA 0.280
Small sample
Resists Cutters + splitterswOBA 0.382 · thin sample
thin sample
Resists FastballwOBA 0.333
Small sample
Resists SinkerwOBA 0.345
Small sample

Context

projection · regression · matchup
Projected range0.279 to 0.361
RegressionNegative · -0.016
Opposing pitcherMartín Pérez
EnvironmentNeutral
Lane calibration receipts
Lane Health 2026-09-02
Palantir 18081 props Brier 0.118 ECE 0.008 14d stable
Fangorn 18081 props Brier 0.118 ECE 0.009 14d stable
Valinor 12423 props Brier 0.112 ECE 0.004 14d stable
Palantir 1591 props Brier 0.247 ECE 0.006 14d stable
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 1087 props Brier 0.248 ECE 0.016 14d stable
Palantir 8613 props Brier 0.238 ECE 0.047 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 683 props Brier 0.163 ECE 0.031 14d stable
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 900 props Brier 0.256 ECE 0.059 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)