MLB Daily DeltaWeek 11 · June 4, 2026
Engraved portrait of Mark Leiter Jr.
Mark Leiter Jr.
ATH·P
Buy Low high·0.85
Change to
Engraved portrait of Ryan Zeferjahn
Ryan Zeferjahn
LAA·P
Hold med·0.50
Change to

Rest of Season Projection

MarkCategoryRyan
46K 53
3.74ERA 3.71
1.24WHIP 1.26
0–0W 2–5
5–9SV 1–3

Current Season

MarkCategoryRyan
25K 32
5.47ERA 5.74
1.46WHIP 1.39
0W 2
4SV 1

What Each Player's System Trusts

Mark Leiter Jr.
  • babip_againstNOISEBABIP-against 0.361 elevated and unstable — bloating the ERA
Ryan Zeferjahn
  • xeraNOISEskill near league average (3.82)

Mark Leiter Jr.: 46 K / 3.74 ERA. Ryan Zeferjahn: 53 K / 3.71 ERA. Different roster decisions — see individual verdicts.

Bare-stats comparison (narrative review pending).

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