MLB Daily DeltaWeek 12 · June 14, 2026
Engraved portrait of Mark Leiter Jr.
Mark Leiter Jr.
ATH·P
Buy Low high·0.89
Change to
Engraved portrait of Mason Montgomery
Mason Montgomery
PIT·P
Hold med·0.50
Change to

Rest of Season Projection

MarkCategoryMason
34K 47
3.72ERA3.71
1.24WHIP1.24
0–0W 1–2
4–7SV 0

Current Season

MarkCategoryMason
25K 30
5.47ERA 3.91
1.46WHIP 1.26
0W 1
4SV 0

What Each Player's System Trusts

Mark Leiter Jr.
  • xeraNOISEluck-free xERA 4.24 is right around league — a usable arm the ERA is hiding
  • babip_againstNOISEBABIP-against 0.351 elevated and unstable — bloating the ERA
Mason Montgomery
  • xeraNOISEskill near league average (3.92)

Mark Leiter Jr.: 34 K / 3.72 ERA. Mason Montgomery: 47 K / 3.71 ERA. Different roster decisions — see individual verdicts.

Bare-stats comparison (narrative review pending).

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