MLB Daily DeltaWeek 19 · July 31, 2026
Cionel Pérez
NYM · P
Change to
Portrait of Jonathan Loáisiga
Jonathan Loáisiga
AZ · P
Change to
Who's more valuable, rest of season

Jonathan Loáisiga.

He projects to help you in more roto categories the rest of the way — strikeouts and saves.

Head-to-head
K
ERA
WHIP
W
SV

Jonathan Loáisiga wins 2 categories (K, SV); Cionel Pérez wins 1 (W); 2 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Cionel Pérez
96.9
Jonathan Loáisiga
97.3
Swinging-Strike %lg 11.0% · higher = better
Cionel Pérez
11.6%
Jonathan Loáisiga
12.3%
Strikeout %lg 22.0% · higher = better
Cionel Pérez
22.7%
Jonathan Loáisiga
18.7%
Chase %lg 28.5% · higher = better
Cionel Pérez
30.0%
Jonathan Loáisiga
36.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Cionel Pérez
50.0%
Jonathan Loáisiga
32.8%
Barrel % Allowedlg 8.0% · lower = better
Cionel Pérez
12.9%
Jonathan Loáisiga
4.0%
xwOBA Allowedlg .315 · lower = better
Cionel Pérez
.346
Jonathan Loáisiga
.284
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
Cionel Pérez
27.15
lg xERA 4.10
now 5.82
3.70
Jonathan Loáisiga
27.15
lg xERA 4.10
now 2.49
3.69
WHIPlower is better
Cionel Pérez
.9001.80
now 1.59
1.24
Jonathan Loáisiga
.9001.80
now 1.06
1.24

Volume · rest of season
Strikeoutshigher is better
Cionel Pérez
4018.60
now 10
9
Jonathan Loáisiga
4018.60
now 13
11
Winshigher is better
Cionel Pérez
.0004.20
now 2
13
Jonathan Loáisiga
.0004.20
now 1
01
Saveshigher is better
Cionel Pérez
.0002.40
now 0
0
Jonathan Loáisiga
.0002.40
now 1
11
If you already own them — trade angle
Hold · wait & seeCionel Pérez — hold.conf 0.50
Sell HighJonathan Loáisiga — sell high. His value is peaking; good time to trade him.conf 0.86
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