MLB Daily DeltaWeek 12 · June 14, 2026
Engraved portrait of David Peterson
David Peterson
NYM·P
Sell med·0.74
Change to
Engraved portrait of Jack Flaherty
Jack Flaherty
DET·P
Sell med·0.70
Change to

Rest of Season Projection

DavidCategoryJack
88K 108
4.50ERA 4.42
1.43WHIP 1.40
3–6W 0–0
0SV0

Current Season

DavidCategoryJack
56K 64
5.18ERA 5.81
1.59WHIP 1.61
3W 0
1SV 0

What Each Player's System Trusts

David Peterson
  • xeraSIGNALstable xERA 4.72 +0.62 vs league with no luck excuse
Jack Flaherty
  • xeraSIGNALstable xERA 4.60 +0.50 vs league with no luck excuse

David Peterson: 88 K / 4.50 ERA. Jack Flaherty: 108 K / 4.42 ERA. Different roster decisions — see individual verdicts.

Bare-stats comparison (narrative review pending).

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