MLB Daily DeltaWeek 25 · September 11, 2026
Robby Ahlstrom
TEX · P
Change to
Portrait of Will Dion
Will Dion
WSH · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 00, 4 even. Take whoever fills a bigger need.

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

Robby Ahlstrom wins 0 (none); Will Dion wins 0 (none); 4 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Robby Ahlstrom
94.4
Will Dion
91.2
Swinging-Strike %lg 11.0% · higher = better
Robby Ahlstrom
12.6%
Will Dion
14.7%
Strikeout %lg 22.0% · higher = better
Robby Ahlstrom
20.6%
Will Dion
28.5%
Chase %lg 28.5% · higher = better
Robby Ahlstrom
26.1%
Will Dion
35.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Robby Ahlstrom
30.6%
Will Dion
33.0%
Barrel % Allowedlg 8.0% · lower = better
Robby Ahlstrom
6.5%
Will Dion
6.0%
xwOBA Allowedlg .315 · lower = better
Robby Ahlstrom
.313
Will Dion
.279
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
Robby Ahlstrom
28.25
lg xERA 4.10
now 0.00
3.70
Will Dion
28.25
lg xERA 4.10
now 6.00
3.70
WHIPlower is better
Robby Ahlstrom
.9002.55
now 0.00
1.24
Will Dion
.9002.55
now 1.83
1.24

Volume · rest of season
Strikeoutshigher is better
Robby Ahlstrom
4013.60
now 2
7
Will Dion
4013.60
now 8
7
Winshigher is better
Robby Ahlstrom
.000.480
now 0
00
Will Dion
.000.480
now 0
00

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

If you already own them — trade angle
Hold · wait & seeRobby Ahlstrom — hold.conf 0.50
Hold · wait & seeWill Dion — hold.conf 0.50
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