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).

