MLB Daily DeltaWeek 11 · June 4, 2026
Engraved portrait of David Peterson
David Peterson
NYM·P
Hold med·0.50
Change to
Engraved portrait of Martín Pérez
Martín Pérez
ATL·P
Sell High high·0.95
Change to

Rest of Season Projection

DavidCategoryMartín
108K 72
4.28ERA 4.24
1.41WHIP 1.33
4–8W4–8
0SV0

Current Season

DavidCategoryMartín
56K 42
5.18ERA 2.79
1.59WHIP 1.06
3W3
1SV 0

What Each Player's System Trusts

David Peterson
  • xeraSIGNALskill near league average (4.38)
Martín Pérez
  • babip_againstNOISEBABIP-against 0.228 suppressed and unstable — flattering the ERA
  • xeraSIGNALluck-free xERA 4.32 is 1.53 above the ERA — regression coming

David Peterson: 108 K / 4.28 ERA. Martín Pérez: 72 K / 4.24 ERA. Different roster decisions — see individual verdicts.

Bare-stats comparison (narrative review pending).

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