MLB Daily DeltaWeek 19 · August 3, 2026
Portrait of Martín Pérez
Martín Pérez
ATL · P
Change to
Patrick Sandoval
BOS · P
Change to
Who's more valuable, rest of season

Patrick Sandoval.

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

Patrick Sandoval 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
Patrick Sandoval
93.9
Swinging-Strike %lg 11.0% · higher = better
Martín Pérez
9.3%
Patrick Sandoval
12.6%
Strikeout %lg 22.0% · higher = better
Martín Pérez
18.8%
Patrick Sandoval
23.3%
Chase %lg 28.5% · higher = better
Martín Pérez
26.0%
Patrick Sandoval
31.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Martín Pérez
37.6%
Patrick Sandoval
35.6%
Barrel % Allowedlg 8.0% · lower = better
Martín Pérez
6.0%
Patrick Sandoval
5.1%
xwOBA Allowedlg .315 · lower = better
Martín Pérez
.324
Patrick Sandoval
.323
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
25.20
lg xERA 4.10
now 2.79
4.31
Patrick Sandoval
25.20
lg xERA 4.10
now 2.08
4.10
WHIPlower is better
Martín Pérez
.9301.51
now 1.06
1.36
Patrick Sandoval
.9301.51
now 1.38
1.30

Volume · rest of season
Strikeoutshigher is better
Martín Pérez
4056.80
now 42
31
Patrick Sandoval
4056.80
now 5
36
Winshigher is better
Martín Pérez
.0004.20
now 3
13
Patrick Sandoval
.0004.20
now 0
00

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 · wait & seePatrick Sandoval — hold.conf 0.50
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