MLB Daily DeltaWeek 29 · October 9, 2026
Portrait of Orion Kerkering
Orion Kerkering
PHI · 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 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
◀
ERA
WHIP
▶
W
SV n/a

Orion Kerkering wins 1 (ERA); Ryan Rolison wins 1 (WHIP); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Orion Kerkering
97.2
Ryan Rolison
94.7
Swinging-Strike %lg 11.0% · higher = better
Orion Kerkering
11.0%
Ryan Rolison
9.0%
Strikeout %lg 22.0% · higher = better
Orion Kerkering
23.5%
Ryan Rolison
21.5%
Chase %lg 28.5% · higher = better
Orion Kerkering
28.3%
Ryan Rolison
26.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Orion Kerkering
31.1%
Ryan Rolison
38.6%
Barrel % Allowedlg 8.0% · lower = better
Orion Kerkering
6.1%
Ryan Rolison
6.9%
xwOBA Allowedlg .315 · lower = better
Orion Kerkering
.303
Ryan Rolison
.309
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
24.46
lg xERA 4.10
now 2.53
3.81
Ryan Rolison
24.46
lg xERA 4.10
now 2.89
3.91
WHIPlower is better
Orion Kerkering
1.011.54
now 1.13
1.42
Ryan Rolison
1.011.54
now 1.39
1.39

Volume · rest of season
Strikeoutshigher is better
Orion Kerkering
4032.20
now 23
0
Ryan Rolison
4032.20
now 16
0
Winshigher is better
Orion Kerkering
.0004.20
now 3
0–0
Ryan Rolison
.0004.20
now 3
0–0

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

If you already own them — trade angle
Hold · leans buyOrion Kerkering — hold.conf 0.60
Hold · steadyRyan Rolison — hold.conf 0.60
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