MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Martín Pérez
Martín Pérez
ATL · P
Change to
Portrait of Shane Baz
Shane Baz
BAL · P
Change to
Who's more valuable, rest of season

Shane Baz.

He projects to help you in more roto categories the rest of the way — strikeouts, ERA, and WHIP. Martín Pérez’s box score looks better right now, but it’s built on luck that won’t hold.

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

Shane Baz wins 3 categories (K, ERA, WHIP); Martín Pérez wins 1 (W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Martín Pérez
89.9
Shane Baz
95.9
Swinging-Strike %lg 11.0% · higher = better
Martín Pérez
9.4%
Shane Baz
10.8%
Strikeout %lg 22.0% · higher = better
Martín Pérez
18.0%
Shane Baz
20.9%
Chase %lg 28.5% · higher = better
Martín Pérez
26.9%
Shane Baz
30.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Martín Pérez
38.1%
Shane Baz
41.3%
Barrel % Allowedlg 8.0% · lower = better
Martín Pérez
5.4%
Shane Baz
6.5%
xwOBA Allowedlg .315 · lower = better
Martín Pérez
.334
Shane Baz
.310
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
Martín Pérez
2.105.21
lg xERA 4.10
now 2.79
4.52
Shane Baz
2.105.21
lg xERA 4.10
now 4.48
4.03
WHIPlower is better
Martín Pérez
.9101.58
now 1.06
1.39
Shane Baz
.9101.58
now 1.43
1.38

Volume · rest of season
Strikeoutshigher is better
Martín Pérez
4076.20
now 42
9
Shane Baz
4076.20
now 57
12
Winshigher is better
Martín Pérez
.0004.20
now 3
01
Shane Baz
.0004.20
now 2
01

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

If you already own them — trade angle
Sell HighMartín Pérez — sell high. His value is peaking; good time to trade him.conf 0.95
Hold · steadyShane Baz — hold.conf 0.60
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