MLB Daily DeltaWeek 27 · September 27, 2026
Garrett Whitlock
BOS · 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 0–0, 4 even. Take whoever fills a bigger need.

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

Garrett Whitlock wins 0 (none); Shawn Armstrong 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
Garrett Whitlock
94.9
Shawn Armstrong
93.5
Swinging-Strike %lg 11.0% · higher = better
Garrett Whitlock
18.1%
Shawn Armstrong
11.5%
Strikeout %lg 22.0% · higher = better
Garrett Whitlock
29.8%
Shawn Armstrong
21.9%
Chase %lg 28.5% · higher = better
Garrett Whitlock
42.1%
Shawn Armstrong
24.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Garrett Whitlock
33.8%
Shawn Armstrong
34.0%
Barrel % Allowedlg 8.0% · lower = better
Garrett Whitlock
3.8%
Shawn Armstrong
6.2%
xwOBA Allowedlg .315 · lower = better
Garrett Whitlock
.251
Shawn Armstrong
.306
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
Garrett Whitlock
2.793.96
lg xERA 4.10
now 3.05
3.69
Shawn Armstrong
2.793.96
lg xERA 4.10
now 3.60
3.70
WHIPlower is better
Garrett Whitlock
1.021.42
now 1.11
1.24
Shawn Armstrong
1.021.42
now 1.33
1.24

Volume · rest of season
Strikeoutshigher is better
Garrett Whitlock
4036.40
now 26
0
Shawn Armstrong
4036.40
now 19
0
Winshigher is better
Garrett Whitlock
.0004.20
now 3
0–0
Shawn Armstrong
.0004.20
now 1
0–0

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

If you already own them — trade angle
Hold · wait & seeGarrett Whitlock — hold.conf 0.50
Hold · wait & seeShawn Armstrong — hold.conf 0.50
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