MLB Daily DeltaWeek 18 · July 27, 2026
Portrait of Kirby Yates
Kirby Yates
LAA · P
Change to
Portrait of Ryan Zeferjahn
Ryan Zeferjahn
LAA · P
Change to
Who's more valuable, rest of season

Ryan Zeferjahn.

He projects to help you in more roto categories the rest of the way — strikeouts, ERA, and wins.

Head-to-head
K
ERA
WHIP
W
SV

Ryan Zeferjahn wins 3 categories (K, ERA, W); Kirby Yates wins 2 (WHIP, SV).

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kirby Yates
90.8
Ryan Zeferjahn
97.4
Swinging-Strike %lg 11.0% · higher = better
Kirby Yates
17.5%
Ryan Zeferjahn
13.7%
Strikeout %lg 22.0% · higher = better
Kirby Yates
28.6%
Ryan Zeferjahn
32.4%
Chase %lg 28.5% · higher = better
Kirby Yates
35.3%
Ryan Zeferjahn
23.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Kirby Yates
48.3%
Ryan Zeferjahn
34.0%
Barrel % Allowedlg 8.0% · lower = better
Kirby Yates
8.3%
Ryan Zeferjahn
6.0%
xwOBA Allowedlg .315 · lower = better
Kirby Yates
.294
Ryan Zeferjahn
.273
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
Kirby Yates
2.026.80
lg xERA 4.10
now 4.32
3.70
Ryan Zeferjahn
2.026.80
lg xERA 4.10
now 5.74
3.08
WHIPlower is better
Kirby Yates
1.121.47
now 1.20
1.24
Ryan Zeferjahn
1.121.47
now 1.39
1.36

Volume · rest of season
Strikeoutshigher is better
Kirby Yates
4040.80
now 10
20
Ryan Zeferjahn
4040.80
now 32
22
Winshigher is better
Kirby Yates
.0002.80
now 0
00
Ryan Zeferjahn
.0002.80
now 2
12
Saveshigher is better
Kirby Yates
.0004.40
now 1
13
Ryan Zeferjahn
.0004.40
now 1
01
If you already own them — trade angle
Hold · wait & seeKirby Yates — hold.conf 0.50
BuyRyan Zeferjahn — buy.conf 0.91
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