Mithrandir Metrics
ATL 2026-07-21 Refreshed Sep 2 06:00 AM ET
Section III · Betting · Player detail · 2026-07-21

Mike Yastrzemski

ATL · Hitter · bats L · age 36
IN · 7 Negative regression Neutral
MatchupATL vs SDWalker Buehler
Sample--career MLB AB
PROPS 2 available PERCENTILES 25 rows LINEUPS confirmed artifact 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 15.3
F 15.5
V 11.6
Model 19.5% Market 13.5% Gap +5.5pp
FanDuel 615 tracking Open board
Total Bases 0.5
P 58.3
F -- in progress
V -- in progress
INSUFFICIENT LANES
Model 69.7% Market 70.6% Gap +12.3pp
BetMGM -240 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%4.4%
40 -19 vs proj
Exit velocity89.8
71
Hard-hit%43.8%
71
xBA0.313
39
xSLG0.482
40
xwOBA0.305
48
BB%10.3%
70
Bat speed69.1
42
K%23.8%
42
Defense · percentile strip
Arm Runs0.2 · LF
59
Arm Strength92.5 · LF
47
Outs Above Avg0.0 · LF
46
Range Runs-1.1 · LF
34
Baserunning · percentile strip
Base Running Runs0.8 · LF
67
Sprint Speed27.2 · LF
44
Mithrandir+ · percentile strip
Avoids Bad ChasesST 67.6%
Small sample
Avoids Bad TakesHPT 30.2%
Small sample
Correct Decisions63.5%
Small sample
Resists Breaking - horizontalwOBA 0.273 · small sample
small sample
Resists Breaking - verticalwOBA 0.296 · thin sample
thin sample
Resists ChangeupwOBA 0.288
Small sample
Resists Cutters + splitterswOBA 0.321 · thin sample
thin sample
Resists FastballwOBA 0.335
Small sample
Resists SinkerwOBA 0.351
Small sample
SEAGER+ Plate Discipline98
Small sample

Context

projection · regression · matchup
Projected range0.294 to 0.358
RegressionNegative · -0.040
Opposing pitcherWalker Buehler
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)