MLB Daily DeltaWeek 18 · July 24, 2026
Portrait of Mitchell Parker
Mitchell Parker
WSH · 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 11, 3 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Mitchell Parker wins 1 (WHIP); Ryan Zeferjahn wins 1 (ERA); 3 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Mitchell Parker
93.6
Ryan Zeferjahn
97.4
Swinging-Strike %lg 11.0% · higher = better
Mitchell Parker
14.1%
Ryan Zeferjahn
13.8%
Strikeout %lg 22.0% · higher = better
Mitchell Parker
19.1%
Ryan Zeferjahn
32.5%
Chase %lg 28.5% · higher = better
Mitchell Parker
32.0%
Ryan Zeferjahn
23.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Mitchell Parker
41.9%
Ryan Zeferjahn
34.7%
Barrel % Allowedlg 8.0% · lower = better
Mitchell Parker
8.5%
Ryan Zeferjahn
6.1%
xwOBA Allowedlg .315 · lower = better
Mitchell Parker
.347
Ryan Zeferjahn
.274
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
Mitchell Parker
2.046.80
lg xERA 4.10
now 5.28
3.82
Ryan Zeferjahn
2.046.80
lg xERA 4.10
now 5.74
3.10
WHIPlower is better
Mitchell Parker
1.081.48
now 1.17
1.25
Ryan Zeferjahn
1.081.48
now 1.39
1.35

Volume · rest of season
Strikeoutshigher is better
Mitchell Parker
4037.60
now 26
23
Ryan Zeferjahn
4037.60
now 32
23
Winshigher is better
Mitchell Parker
.2003.80
now 2
13
Ryan Zeferjahn
.2003.80
now 2
12
Saveshigher is better
Mitchell Parker
.0002.40
now 1
11
Ryan Zeferjahn
.0002.40
now 1
01
If you already own them — trade angle
Hold · wait & seeMitchell Parker — hold.conf 0.55
BuyRyan Zeferjahn — buy.conf 0.90
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