MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Aaron Ashby
Aaron Ashby
MIL · P
Change to
Portrait of Mason Montgomery
Mason Montgomery
PIT · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV n/a

Aaron Ashby wins 2 (K, W); Mason Montgomery wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Aaron Ashby
97.3
Mason Montgomery
98.4
Swinging-Strike %lg 11.0% · higher = better
Aaron Ashby
12.8%
Mason Montgomery
16.3%
Strikeout %lg 22.0% · higher = better
Aaron Ashby
31.2%
Mason Montgomery
37.9%
Chase %lg 28.5% · higher = better
Aaron Ashby
29.5%
Mason Montgomery
32.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Aaron Ashby
40.7%
Mason Montgomery
40.9%
Barrel % Allowedlg 8.0% · lower = better
Aaron Ashby
4.5%
Mason Montgomery
7.1%
xwOBA Allowedlg .315 · lower = better
Aaron Ashby
.263
Mason Montgomery
.250
stabilized — trust it · small sample yet · dashed = league avg · right = better
05

The tape

Rest-of-season projection · bold = leads
rest-of-season projection current season projection range
Rate · earned-run quality
ERAlower is better
Aaron Ashby
24.67
lg xERA 4.10
now 2.00
2.85
Mason Montgomery
24.67
lg xERA 4.10
now 3.91
2.57
WHIPlower is better
Aaron Ashby
1.061.38
now 1.28
1.31
Mason Montgomery
1.061.38
now 1.26
1.13

Volume · rest of season
Strikeoutshigher is better
Aaron Ashby
4069
now 51
8
Mason Montgomery
4069
now 30
6
Winshigher is better
Aaron Ashby
.00012.60
now 9
12
Mason Montgomery
.00012.60
now 1
00

SV — not applicable. Both pitch out of the rotation.

If you already own them — trade angle
Buy LowAaron Ashby — buy low. The dip is a window to acquire.conf 0.72
BuyMason Montgomery — buy.conf 0.92
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