MLB Daily DeltaWeek 19 · August 5, 2026
Portrait of Colin Rea
Colin Rea
CHC · 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 22. Take whoever fills a bigger need.

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

Colin Rea wins 2 (K, W); Martín Pérez wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Colin Rea
93.7
Martín Pérez
89.9
Swinging-Strike %lg 11.0% · higher = better
Colin Rea
9.3%
Martín Pérez
9.3%
Strikeout %lg 22.0% · higher = better
Colin Rea
17.7%
Martín Pérez
18.8%
Chase %lg 28.5% · higher = better
Colin Rea
30.6%
Martín Pérez
26.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Colin Rea
41.0%
Martín Pérez
37.6%
Barrel % Allowedlg 8.0% · lower = better
Colin Rea
10.5%
Martín Pérez
6.0%
xwOBA Allowedlg .315 · lower = better
Colin Rea
.353
Martín Pérez
.324
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
Colin Rea
25.79
lg xERA 4.10
now 4.70
4.93
Martín Pérez
25.79
lg xERA 4.10
now 2.79
4.31
WHIPlower is better
Colin Rea
.9401.49
now 1.37
1.37
Martín Pérez
.9401.49
now 1.06
1.36

Volume · rest of season
Strikeoutshigher is better
Colin Rea
4057
now 49
34
Martín Pérez
4057
now 42
29
Winshigher is better
Colin Rea
.0006.60
now 5
25
Martín Pérez
.0006.60
now 3
13

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

If you already own them — trade angle
SellColin Rea — sell.conf 0.90
Sell HighMartín Pérez — sell high. His value is peaking; good time to trade him.conf 0.95
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