MLB Daily DeltaWeek 19 · August 4, 2026
Portrait of Ryan Rolison
Ryan Rolison
CHC · P
Change to
Portrait of Ryan Zeferjahn
Ryan Zeferjahn
CHC · 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 saves.

Head-to-head
K
ERA
WHIP
W
SV

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Ryan Rolison
94.6
Ryan Zeferjahn
97.4
Swinging-Strike %lg 11.0% · higher = better
Ryan Rolison
9.9%
Ryan Zeferjahn
13.8%
Strikeout %lg 22.0% · higher = better
Ryan Rolison
25.6%
Ryan Zeferjahn
33.6%
Chase %lg 28.5% · higher = better
Ryan Rolison
25.4%
Ryan Zeferjahn
24.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Ryan Rolison
43.1%
Ryan Zeferjahn
35.2%
Barrel % Allowedlg 8.0% · lower = better
Ryan Rolison
6.3%
Ryan Zeferjahn
5.6%
xwOBA Allowedlg .315 · lower = better
Ryan Rolison
.306
Ryan Zeferjahn
.268
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
Ryan Rolison
26.88
lg xERA 4.10
now 2.89
3.70
Ryan Zeferjahn
26.88
lg xERA 4.10
now 5.74
2.95
WHIPlower is better
Ryan Rolison
1.171.46
now 1.39
1.24
Ryan Zeferjahn
1.171.46
now 1.39
1.32

Volume · rest of season
Strikeoutshigher is better
Ryan Rolison
4040.40
now 16
11
Ryan Zeferjahn
4040.40
now 32
19
Winshigher is better
Ryan Rolison
.0005.20
now 3
14
Ryan Zeferjahn
.0005.20
now 2
12
Saveshigher is better
Ryan Rolison
.0002.40
now 0
0
Ryan Zeferjahn
.0002.40
now 1
01
If you already own them — trade angle
Hold · wait & seeRyan Rolison — hold.conf 0.50
BuyRyan Zeferjahn — buy.conf 0.92
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