MLB Daily DeltaWeek 12 · June 14, 2026
Engraved portrait of Greg Weissert
Greg Weissert
BOS·P
Hold med·0.50
Change to
Isaac Mattson
PIT·P
Hold med·0.50
Change to

Rest of Season Projection

GregCategoryIsaac
30K 29
3.69ERA3.70
1.24WHIP1.24
0–0W0–0
0SV0

Current Season

GregCategoryIsaac
22K 15
4.24ERA 4.12
1.41WHIP 1.47
0W0
0SV0

What Each Player's System Trusts

Greg Weissert
  • xeraNOISEskill near league average (3.35)
Isaac Mattson
  • xeraNOISEskill near league average (6.33)

Greg Weissert: 30 K / 3.69 ERA. Isaac Mattson: 29 K / 3.70 ERA. Different roster decisions — see individual verdicts.

Bare-stats comparison (narrative review pending).

Tweet

Related Comparisons