MLB Daily DeltaWeek 27 · September 27, 2026
Aaron Civale
CHC · P
Change to
Portrait of Jack Flaherty
Jack Flaherty
DET · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
◀
ERA
WHIP
▶
W
SV n/a

Aaron Civale wins 1 (ERA); Jack Flaherty wins 1 (WHIP); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Aaron Civale
91.5
Jack Flaherty
92.7
Swinging-Strike %lg 11.0% · higher = better
Aaron Civale
9.6%
Jack Flaherty
12.2%
Strikeout %lg 22.0% · higher = better
Aaron Civale
18.5%
Jack Flaherty
26.2%
Chase %lg 28.5% · higher = better
Aaron Civale
31.1%
Jack Flaherty
27.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Aaron Civale
40.2%
Jack Flaherty
46.2%
Barrel % Allowedlg 8.0% · lower = better
Aaron Civale
8.0%
Jack Flaherty
8.4%
xwOBA Allowedlg .315 · lower = better
Aaron Civale
.320
Jack Flaherty
.323
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 Civale
3.566.45
lg xERA 4.10
now 4.20
4.26
Jack Flaherty
3.566.45
lg xERA 4.10
now 5.81
4.32
WHIPlower is better
Aaron Civale
1.261.71
now 1.47
1.37
Jack Flaherty
1.261.71
now 1.61
1.36

Volume · rest of season
Strikeoutshigher is better
Aaron Civale
4089.60
now 39
0
Jack Flaherty
4089.60
now 64
0
Winshigher is better
Aaron Civale
.0007
now 5
0–0
Jack Flaherty
.0007
now 0
0–0

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

If you already own them — trade angle
Hold · leans sellAaron Civale — hold.conf 0.60
SellJack Flaherty — sell.conf 0.65
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