MLB Daily DeltaWeek 18 · July 28, 2026
Cole Sulser
TB · P
Change to
Portrait of Ryan Zeferjahn
Ryan Zeferjahn
LAA · 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

Cole Sulser wins 2 (WHIP, SV); Ryan Zeferjahn wins 2 (K, ERA); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Cole Sulser
92.2
Ryan Zeferjahn
97.4
Swinging-Strike %lg 11.0% · higher = better
Cole Sulser
13.8%
Ryan Zeferjahn
13.8%
Strikeout %lg 22.0% · higher = better
Cole Sulser
24.4%
Ryan Zeferjahn
32.7%
Chase %lg 28.5% · higher = better
Cole Sulser
35.9%
Ryan Zeferjahn
23.7%
Hard-Hit % Allowedlg 40.0% · lower = better
Cole Sulser
39.3%
Ryan Zeferjahn
35.3%
Barrel % Allowedlg 8.0% · lower = better
Cole Sulser
11.9%
Ryan Zeferjahn
5.9%
xwOBA Allowedlg .315 · lower = better
Cole Sulser
.325
Ryan Zeferjahn
.272
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
Cole Sulser
26.82
lg xERA 4.10
now 5.01
3.72
Ryan Zeferjahn
26.82
lg xERA 4.10
now 5.74
3.04
WHIPlower is better
Cole Sulser
1.121.66
now 1.54
1.24
Ryan Zeferjahn
1.121.66
now 1.39
1.35

Volume · rest of season
Strikeoutshigher is better
Cole Sulser
4039.20
now 18
14
Ryan Zeferjahn
4039.20
now 32
21
Winshigher is better
Cole Sulser
.0002.80
now 1
01
Ryan Zeferjahn
.0002.80
now 2
12
Saveshigher is better
Cole Sulser
.0004.40
now 2
13
Ryan Zeferjahn
.0004.40
now 1
01
If you already own them — trade angle
Hold · wait & seeCole Sulser — hold.conf 0.55
BuyRyan Zeferjahn — buy.conf 0.92
Tweet