MLB Daily DeltaWeek 19 · August 4, 2026
Portrait of Ryan Rolison
Ryan Rolison
CHC · P
Change to
Portrait of Tim Mayza
Tim Mayza
PHI · P
Change to
Who's more valuable, rest of season

Tim Mayza.

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

Head-to-head
K
ERA
WHIP
W
SV n/a

Tim Mayza wins 3 categories (K, ERA, WHIP); Ryan Rolison wins 1 (W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Ryan Rolison
94.6
Tim Mayza
94.7
Swinging-Strike %lg 11.0% · higher = better
Ryan Rolison
9.9%
Tim Mayza
10.8%
Strikeout %lg 22.0% · higher = better
Ryan Rolison
25.6%
Tim Mayza
24.9%
Chase %lg 28.5% · higher = better
Ryan Rolison
25.4%
Tim Mayza
27.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Ryan Rolison
43.1%
Tim Mayza
45.4%
Barrel % Allowedlg 8.0% · lower = better
Ryan Rolison
6.3%
Tim Mayza
7.1%
xwOBA Allowedlg .315 · lower = better
Ryan Rolison
.306
Tim Mayza
.284
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
2.574.02
lg xERA 4.10
now 2.89
3.70
Tim Mayza
2.574.02
lg xERA 4.10
now 3.62
3.33
WHIPlower is better
Ryan Rolison
.9001.55
now 1.39
1.24
Tim Mayza
.9001.55
now 0.99
1.20

Volume · rest of season
Strikeoutshigher is better
Ryan Rolison
4032
now 16
11
Tim Mayza
4032
now 26
16
Winshigher is better
Ryan Rolison
.0005.60
now 3
14
Tim Mayza
.0005.60
now 1
01

SV — not applicable. Both pitch out of the rotation.

If you already own them — trade angle
Hold · wait & seeRyan Rolison — hold.conf 0.50
BuyTim Mayza — buy.conf 0.83
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