MLB Daily DeltaWeek 17 · July 20, 2026
Robby Ahlstrom
TEX · P
Change to
Portrait of Shawn Armstrong
Shawn Armstrong
CLE · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 11, 2 even. Take whoever fills a bigger need.

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

Robby Ahlstrom wins 1 (K); Shawn Armstrong wins 1 (W); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Robby Ahlstrom
94.6
Shawn Armstrong
93.6
Swinging-Strike %lg 11.0% · higher = better
Robby Ahlstrom
10.4%
Shawn Armstrong
12.5%
Strikeout %lg 22.0% · higher = better
Robby Ahlstrom
12.1%
Shawn Armstrong
23.5%
Chase %lg 28.5% · higher = better
Robby Ahlstrom
27.5%
Shawn Armstrong
24.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Robby Ahlstrom
32.0%
Shawn Armstrong
37.3%
Barrel % Allowedlg 8.0% · lower = better
Robby Ahlstrom
4.0%
Shawn Armstrong
7.2%
xwOBA Allowedlg .315 · lower = better
Robby Ahlstrom
.336
Shawn Armstrong
.303
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
25.18
lg xERA 4.10
now 0.00
3.70
Shawn Armstrong
25.18
lg xERA 4.10
now 3.60
3.70
WHIPlower is better
Robby Ahlstrom
.9001.86
now 0.00
1.24
Shawn Armstrong
.9001.86
now 1.33
1.24

Volume · rest of season
Strikeoutshigher is better
Robby Ahlstrom
4045.40
now 2
33
Shawn Armstrong
4045.40
now 19
24
Winshigher is better
Robby Ahlstrom
.0002.80
now 0
00
Shawn Armstrong
.0002.80
now 1
12

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 & seeShawn Armstrong — hold.conf 0.50
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