MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of Eric Lauer
Eric Lauer
LAD · P
Change to
Portrait of Martín Pérez
Martín Pérez
ATL · 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

Eric Lauer wins 1 (WHIP); Martín Pérez wins 1 (ERA); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Eric Lauer
91.1
Martín Pérez
89.9
Swinging-Strike %lg 11.0% · higher = better
Eric Lauer
9.7%
Martín Pérez
9.1%
Strikeout %lg 22.0% · higher = better
Eric Lauer
15.5%
Martín Pérez
17.1%
Chase %lg 28.5% · higher = better
Eric Lauer
33.1%
Martín Pérez
27.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Eric Lauer
36.0%
Martín Pérez
35.0%
Barrel % Allowedlg 8.0% · lower = better
Eric Lauer
11.0%
Martín Pérez
4.7%
xwOBA Allowedlg .315 · lower = better
Eric Lauer
.342
Martín Pérez
.325
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
Eric Lauer
27.21
lg xERA 4.10
now 5.95
4.72
Martín Pérez
27.21
lg xERA 4.10
now 2.79
4.36
WHIPlower is better
Eric Lauer
.9301.52
now 1.39
1.33
Martín Pérez
.9301.52
now 1.06
1.39

Volume · rest of season
Strikeoutshigher is better
Eric Lauer
4058.80
now 30
0
Martín Pérez
4058.80
now 42
0
Winshigher is better
Eric Lauer
.0004.20
now 2
0–0
Martín Pérez
.0004.20
now 3
0–0

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

If you already own them — trade angle
SellEric Lauer — sell.conf 0.83
Sell HighMartín Pérez — sell high. His value is peaking; good time to trade him.conf 0.95
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