MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Craig Kimbrel
Craig Kimbrel
KC · P
Change to
Portrait of Jack Perkins
Jack Perkins
ATH · P
Change to
Who's more valuable, rest of season

Craig Kimbrel.

He projects to help you in more roto categories the rest of the way — ERA and WHIP. Jack Perkins’s box score looks better right now, but it’s built on luck that won’t hold.

Head-to-head
K
ERA
WHIP
W
SV

Craig Kimbrel wins 2 categories (ERA, WHIP); Jack Perkins wins 1 (SV); 2 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Craig Kimbrel
93.6
Jack Perkins
95.7
Swinging-Strike %lg 11.0% · higher = better
Craig Kimbrel
11.4%
Jack Perkins
12.8%
Strikeout %lg 22.0% · higher = better
Craig Kimbrel
21.1%
Jack Perkins
25.2%
Chase %lg 28.5% · higher = better
Craig Kimbrel
29.3%
Jack Perkins
33.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Craig Kimbrel
36.6%
Jack Perkins
37.3%
Barrel % Allowedlg 8.0% · lower = better
Craig Kimbrel
5.7%
Jack Perkins
8.8%
xwOBA Allowedlg .315 · lower = better
Craig Kimbrel
.313
Jack Perkins
.311
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
Craig Kimbrel
2.936.40
lg xERA 4.10
now 5.63
3.70
Jack Perkins
2.936.40
lg xERA 4.10
now 5.46
3.93
WHIPlower is better
Craig Kimbrel
1.121.53
now 1.44
1.24
Jack Perkins
1.121.53
now 1.21
1.35

Volume · rest of season
Strikeoutshigher is better
Craig Kimbrel
4043.40
now 17
7
Jack Perkins
4043.40
now 33
7
Winshigher is better
Craig Kimbrel
.0002.80
now 0
00
Jack Perkins
.0002.80
now 2
01
Saveshigher is better
Craig Kimbrel
.0004.40
now 0
0
Jack Perkins
.0004.40
now 3
01
If you already own them — trade angle
Hold · wait & seeCraig Kimbrel — hold.conf 0.50
Buy LowJack Perkins — buy low. The dip is a window to acquire.conf 0.90
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