Mithrandir Metrics
TB 2026-07-19 Refreshed Jul 20 06:00 AM ET
Section III · Betting · Player detail · 2026-07-19

Chandler Simpson

TB · Hitter · bats L · age 26
IN · 5 Negative regression Neutral
MatchupTB vs BOSSonny Gray
Sample751.0career MLB AB
PROPS 3 available PERCENTILES 27 rows LINEUPS confirmed artifact NO PROSE templated rows only
Palantir calibration review active Last 14d ECE 0.097, 14d error rising. This flags probability calibration, not a blanket model failure.
Valinor calibration review active Last 14d ECE 0.076, 14d stable. This flags probability calibration, not a blanket model failure.
Palantir calibration review active Last 14d ECE 0.065, 14d error rising. This flags probability calibration, not a blanket model failure.
Palantir calibration review active Last 14d ECE 0.082, 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 4.9
F 0.0
V 7.7
Model 3.5% Market 8.0% Gap -4.5pp
BetMGM 1150 tracking Open board
Total Bases 0.5
P 52.5
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 52.5% Market 80.2% Gap +11.8pp
FanDuel 130 tracking Open board
Hits 1.5
P 30.5
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 30.5% Market -- Gap +1.7pp
FanDuel 210 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%0.0%
1
Exit velocity81.3
3
Hard-hit%14.7%
1
xBA0.288
20
xSLG0.329
2
xwOBA0.266
14 -44 vs proj
BB%4.8%
12 -16 vs proj
Bat speed61.8
2
K%9.0%
99
Defense · percentile strip
Arm Runs-0.9 · LF
22
Arm Strength96.1 · LF
74
Outs Above Avg8.0 · LF
99
Range Runs7.0 · LF
96
Baserunning · percentile strip
Base Running Runs4.8 · LF
99
Bolts71.0 · LF
100
SB Success Rate75.0% · LF
34
Sprint Speed29.5 · LF
95
Mithrandir+ · percentile strip
Avoids Bad ChasesST 66.1%
53
Avoids Bad TakesHPT 28.8%
18
Correct Decisions65.0%
37
SEAGER+ Plate Discipline98
35
Resists Breaking - horizontalwOBA 0.311 · small sample
small sample
Resists Breaking - verticalwOBA 0.282 · thin sample
thin sample
Resists ChangeupwOBA 0.264
Small sample
Resists Cutters + splitterswOBA 0.342 · thin sample
thin sample
Resists FastballwOBA 0.328
Small sample
Resists SinkerwOBA 0.359
Small sample

Context

projection · regression · matchup
Projected range0.284 to 0.339
RegressionNegative · -0.061
Opposing pitcherSonny Gray
EnvironmentNeutral
Lane calibration receipts
Lane Health 2026-07-20
Palantir 10059 props Brier 0.124 ECE 0.010 14d stable
Fangorn 10059 props Brier 0.124 ECE 0.011 14d stable
Valinor 4464 props Brier 0.118 ECE 0.006 14d stable
Palantir 860 props Brier 0.248 ECE 0.035 14d error rising
Fangorn 53 props Brier 0.257 ECE 0.119 sample building
Valinor 356 props Brier 0.249 ECE 0.041 14d stable
Palantir 4739 props Brier 0.240 ECE 0.076 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 288 props Brier 0.176 ECE 0.047 14d error rising
Fangorn tracking in progress (0 logged)
Valinor tracking in progress (0 logged)
Palantir 462 props Brier 0.260 ECE 0.055 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)