MLB Daily DeltaWeek 17 · July 22, 2026
Portrait of Jameson Taillon
Jameson Taillon
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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jameson Taillon
91.8
Martín Pérez
90.0
Swinging-Strike %lg 11.0% · higher = better
Jameson Taillon
12.2%
Martín Pérez
9.3%
Strikeout %lg 22.0% · higher = better
Jameson Taillon
21.2%
Martín Pérez
18.6%
Chase %lg 28.5% · higher = better
Jameson Taillon
31.0%
Martín Pérez
26.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Jameson Taillon
39.1%
Martín Pérez
36.3%
Barrel % Allowedlg 8.0% · lower = better
Jameson Taillon
14.4%
Martín Pérez
6.8%
xwOBA Allowedlg .315 · lower = better
Jameson Taillon
.354
Martín Pérez
.330
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
Jameson Taillon
26.40
lg xERA 4.10
now 5.37
4.96
Martín Pérez
26.40
lg xERA 4.10
now 2.79
4.44
WHIPlower is better
Jameson Taillon
.9401.49
now 1.28
1.30
Martín Pérez
.9401.49
now 1.06
1.37

Volume · rest of season
Strikeoutshigher is better
Jameson Taillon
4056.60
now 51
45
Martín Pérez
4056.60
now 42
38
Winshigher is better
Jameson Taillon
.0005.20
now 2
12
Martín Pérez
.0005.20
now 3
24

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

If you already own them — trade angle
SellJameson Taillon — 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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