MLB Daily DeltaWeek 19 · July 30, 2026
Garrett Whitlock
BOS · P
Change to
Portrait of Ryan Rolison
Ryan Rolison
CHC · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 11, 2 even. Take whoever fills a bigger need.

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

Garrett Whitlock wins 1 (K); Ryan Rolison wins 1 (W); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Garrett Whitlock
94.9
Ryan Rolison
94.6
Swinging-Strike %lg 11.0% · higher = better
Garrett Whitlock
16.2%
Ryan Rolison
9.8%
Strikeout %lg 22.0% · higher = better
Garrett Whitlock
27.7%
Ryan Rolison
25.6%
Chase %lg 28.5% · higher = better
Garrett Whitlock
41.6%
Ryan Rolison
25.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Garrett Whitlock
33.7%
Ryan Rolison
42.6%
Barrel % Allowedlg 8.0% · lower = better
Garrett Whitlock
4.0%
Ryan Rolison
5.8%
xwOBA Allowedlg .315 · lower = better
Garrett Whitlock
.262
Ryan Rolison
.311
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
Garrett Whitlock
2.574.02
lg xERA 4.10
now 3.05
3.69
Ryan Rolison
2.574.02
lg xERA 4.10
now 2.89
3.70
WHIPlower is better
Garrett Whitlock
11.50
now 1.11
1.24
Ryan Rolison
11.50
now 1.39
1.24

Volume · rest of season
Strikeoutshigher is better
Garrett Whitlock
4031.60
now 26
21
Ryan Rolison
4031.60
now 16
12
Winshigher is better
Garrett Whitlock
.0005.20
now 3
14
Ryan Rolison
.0005.20
now 3
24

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

If you already own them — trade angle
Sell HighGarrett Whitlock — sell high. His value is peaking; good time to trade him.conf 0.85
Hold · wait & seeRyan Rolison — hold.conf 0.50
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