MLB Daily DeltaWeek 27 · September 30, 2026
Cesar Perdomo
SF · P
Change to
Garrett Whitlock
BOS · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 0–0, 4 even. Take whoever fills a bigger need.

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

Cesar Perdomo wins 0 (none); Garrett Whitlock wins 0 (none); 4 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Cesar Perdomo
93.0
Garrett Whitlock
94.9
Swinging-Strike %lg 11.0% · higher = better
Cesar Perdomo
9.9%
Garrett Whitlock
18.1%
Strikeout %lg 22.0% · higher = better
Cesar Perdomo
13.5%
Garrett Whitlock
29.8%
Chase %lg 28.5% · higher = better
Cesar Perdomo
27.9%
Garrett Whitlock
42.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Cesar Perdomo
42.2%
Garrett Whitlock
33.8%
Barrel % Allowedlg 8.0% · lower = better
Cesar Perdomo
7.2%
Garrett Whitlock
3.8%
xwOBA Allowedlg .315 · lower = better
Cesar Perdomo
.324
Garrett Whitlock
.251
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
Cesar Perdomo
24.28
lg xERA 4.10
now 2.25
3.70
Garrett Whitlock
24.28
lg xERA 4.10
now 3.05
3.69
WHIPlower is better
Cesar Perdomo
.9001.34
now 1.00
1.24
Garrett Whitlock
.9001.34
now 1.11
1.24

Volume · rest of season
Strikeoutshigher is better
Cesar Perdomo
4036.40
now 4
0
Garrett Whitlock
4036.40
now 26
0
Winshigher is better
Cesar Perdomo
.0004.20
now 0
0–0
Garrett Whitlock
.0004.20
now 3
0–0

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

If you already own them — trade angle
Hold · wait & seeCesar Perdomo — hold.conf 0.50
Hold · wait & seeGarrett Whitlock — hold.conf 0.50
Tweet