MLB Daily DeltaWeek 18 · July 28, 2026
Portrait of Jack Flaherty
Jack Flaherty
DET · P
Change to
Portrait of Kumar Rocker
Kumar Rocker
TEX · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22. Take whoever fills a bigger need.

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

Jack Flaherty wins 2 (K, ERA); Kumar Rocker wins 2 (WHIP, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jack Flaherty
92.7
Kumar Rocker
94.4
Swinging-Strike %lg 11.0% · higher = better
Jack Flaherty
12.2%
Kumar Rocker
12.3%
Strikeout %lg 22.0% · higher = better
Jack Flaherty
26.2%
Kumar Rocker
20.9%
Chase %lg 28.5% · higher = better
Jack Flaherty
27.6%
Kumar Rocker
31.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Flaherty
46.2%
Kumar Rocker
42.3%
Barrel % Allowedlg 8.0% · lower = better
Jack Flaherty
8.4%
Kumar Rocker
7.3%
xwOBA Allowedlg .315 · lower = better
Jack Flaherty
.323
Kumar Rocker
.330
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
Jack Flaherty
2.636.72
lg xERA 4.10
now 5.81
4.29
Kumar Rocker
2.636.72
lg xERA 4.10
now 3.54
4.42
WHIPlower is better
Jack Flaherty
1.201.73
now 1.61
1.36
Kumar Rocker
1.201.73
now 1.32
1.35

Volume · rest of season
Strikeoutshigher is better
Jack Flaherty
4075.60
now 64
54
Kumar Rocker
4075.60
now 44
35
Winshigher is better
Jack Flaherty
.0002.80
now 0
00
Kumar Rocker
.0002.80
now 2
12

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

If you already own them — trade angle
Hold · leans sellJack Flaherty — hold.conf 0.60
SellKumar Rocker — sell.conf 0.70
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