MLB Daily DeltaWeek 19 · August 4, 2026
Aaron Bummer
KC · P
Change to
Portrait of Cooper Criswell
Cooper Criswell
SEA · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22, 1 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Aaron Bummer wins 2 (K, WHIP); Cooper Criswell wins 2 (ERA, SV); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Aaron Bummer
90.5
Cooper Criswell
91.0
Swinging-Strike %lg 11.0% · higher = better
Aaron Bummer
9.8%
Cooper Criswell
10.6%
Strikeout %lg 22.0% · higher = better
Aaron Bummer
15.5%
Cooper Criswell
19.0%
Chase %lg 28.5% · higher = better
Aaron Bummer
27.7%
Cooper Criswell
36.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Aaron Bummer
51.7%
Cooper Criswell
36.0%
Barrel % Allowedlg 8.0% · lower = better
Aaron Bummer
13.3%
Cooper Criswell
4.5%
xwOBA Allowedlg .315 · lower = better
Aaron Bummer
.373
Cooper Criswell
.286
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 Bummer
28.25
lg xERA 4.10
now 8.82
3.70
Cooper Criswell
28.25
lg xERA 4.10
now 3.08
3.68
WHIPlower is better
Aaron Bummer
.9002.30
now 1.96
1.24
Cooper Criswell
.9002.30
now 1.10
1.25

Volume · rest of season
Strikeoutshigher is better
Aaron Bummer
4024.60
now 13
16
Cooper Criswell
4024.60
now 19
11
Winshigher is better
Aaron Bummer
.0002.80
now 1
01
Cooper Criswell
.0002.80
now 2
12
Saveshigher is better
Aaron Bummer
.0002.40
now 0
0
Cooper Criswell
.0002.40
now 1
01
If you already own them — trade angle
Hold · wait & seeAaron Bummer — hold.conf 0.50
Hold · wait & seeCooper Criswell — hold.conf 0.50
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