MLB Daily DeltaWeek 25 · September 11, 2026
Portrait of Aaron Ashby
Aaron Ashby
MIL · P
Change to
Portrait of Riley O'Brien
Riley O'Brien
STL · P
Change to
Who's more valuable, rest of season

Aaron Ashby.

He projects to help you in more roto categories the rest of the way — strikeouts, ERA, and WHIP.

Head-to-head
K
ERA
WHIP
W
SV

Aaron Ashby wins 3 categories (K, ERA, WHIP); Riley O'Brien wins 1 (SV); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Aaron Ashby
97.3
Riley O'Brien
97.8
Swinging-Strike %lg 11.0% · higher = better
Aaron Ashby
12.8%
Riley O'Brien
11.2%
Strikeout %lg 22.0% · higher = better
Aaron Ashby
31.2%
Riley O'Brien
22.7%
Chase %lg 28.5% · higher = better
Aaron Ashby
29.5%
Riley O'Brien
28.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Aaron Ashby
40.7%
Riley O'Brien
41.8%
Barrel % Allowedlg 8.0% · lower = better
Aaron Ashby
4.5%
Riley O'Brien
7.0%
xwOBA Allowedlg .315 · lower = better
Aaron Ashby
.263
Riley O'Brien
.343
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
25.61
lg xERA 4.10
now 2.00
2.86
Riley O'Brien
25.61
lg xERA 4.10
now 3.20
4.58
WHIPlower is better
Aaron Ashby
.9001.51
now 1.28
1.31
Riley O'Brien
.9001.51
now 0.99
1.36

Volume · rest of season
Strikeoutshigher is better
Aaron Ashby
4069.40
now 51
7
Riley O'Brien
4069.40
now 27
5
Winshigher is better
Aaron Ashby
.00012.60
now 9
12
Riley O'Brien
.00012.60
now 3
01
Saveshigher is better
Aaron Ashby
.00019.60
now 0
0
Riley O'Brien
.00019.60
now 14
23
If you already own them — trade angle
Buy LowAaron Ashby — buy low. The dip is a window to acquire.conf 0.72
SellRiley O'Brien — sell.conf 0.84
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