MLB Daily DeltaWeek 27 · September 30, 2026
Cesar Perdomo
SF · P
Change to
Portrait of Mason Miller
Mason Miller
SD · P
Change to
Who's more valuable, rest of season

Mason Miller.

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

Head-to-head
K
ERA
▶
WHIP
▶
W
SV n/a

Mason Miller wins 2 categories (ERA, WHIP); Cesar Perdomo wins 0 (none); 2 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
Mason Miller
101.4
Swinging-Strike %lg 11.0% · higher = better
Cesar Perdomo
9.9%
Mason Miller
21.4%
Strikeout %lg 22.0% · higher = better
Cesar Perdomo
13.5%
Mason Miller
47.4%
Chase %lg 28.5% · higher = better
Cesar Perdomo
27.9%
Mason Miller
36.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Cesar Perdomo
42.2%
Mason Miller
28.7%
Barrel % Allowedlg 8.0% · lower = better
Cesar Perdomo
7.2%
Mason Miller
7.0%
xwOBA Allowedlg .315 · lower = better
Cesar Perdomo
.324
Mason Miller
.201
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
24.89
lg xERA 4.10
now 2.25
3.70
Mason Miller
24.89
lg xERA 4.10
now 0.72
1.70
WHIPlower is better
Cesar Perdomo
.9001.40
now 1.00
1.24
Mason Miller
.9001.40
now 0.84
0.99

Volume · rest of season
Strikeoutshigher is better
Cesar Perdomo
4068.60
now 4
0
Mason Miller
4068.60
now 49
0
Winshigher is better
Cesar Perdomo
.0001.48
now 0
0–0
Mason Miller
.0001.48
now 1
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
BuyMason Miller — buy.conf 0.92
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