MLB Daily DeltaWeek 20 · August 7, 2026
Portrait of Orion Kerkering
Orion Kerkering
PHI · P
Change to
Portrait of Ryan Zeferjahn
Ryan Zeferjahn
CHC · 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

Orion Kerkering wins 2 (WHIP, W); 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
Orion Kerkering
97.4
Ryan Zeferjahn
97.4
Swinging-Strike %lg 11.0% · higher = better
Orion Kerkering
11.8%
Ryan Zeferjahn
13.9%
Strikeout %lg 22.0% · higher = better
Orion Kerkering
25.0%
Ryan Zeferjahn
33.5%
Chase %lg 28.5% · higher = better
Orion Kerkering
28.4%
Ryan Zeferjahn
24.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Orion Kerkering
28.7%
Ryan Zeferjahn
35.7%
Barrel % Allowedlg 8.0% · lower = better
Orion Kerkering
6.1%
Ryan Zeferjahn
6.3%
xwOBA Allowedlg .315 · lower = better
Orion Kerkering
.276
Ryan Zeferjahn
.267
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
Orion Kerkering
27.02
lg xERA 4.10
now 2.53
3.69
Ryan Zeferjahn
27.02
lg xERA 4.10
now 5.74
2.93
WHIPlower is better
Orion Kerkering
1.031.49
now 1.13
1.24
Ryan Zeferjahn
1.031.49
now 1.39
1.31

Volume · rest of season
Strikeoutshigher is better
Orion Kerkering
4038.40
now 23
16
Ryan Zeferjahn
4038.40
now 32
18
Winshigher is better
Orion Kerkering
.2003.80
now 3
13
Ryan Zeferjahn
.2003.80
now 2
12
Saveshigher is better
Orion Kerkering
.0002.40
now 1
01
Ryan Zeferjahn
.0002.40
now 1
01
If you already own them — trade angle
Hold · wait & seeOrion Kerkering — hold.conf 0.50
BuyRyan Zeferjahn — buy.conf 0.92
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