MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of JoJo Romero
JoJo Romero
STL · P
Change to
Portrait of Reynaldo López
Reynaldo López
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

JoJo Romero wins 2 (ERA, WHIP); Reynaldo López wins 2 (K, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
JoJo Romero
94.5
Reynaldo López
94.2
Swinging-Strike %lg 11.0% · higher = better
JoJo Romero
9.4%
Reynaldo López
9.9%
Strikeout %lg 22.0% · higher = better
JoJo Romero
23.1%
Reynaldo López
21.6%
Chase %lg 28.5% · higher = better
JoJo Romero
27.9%
Reynaldo López
27.2%
Hard-Hit % Allowedlg 40.0% · lower = better
JoJo Romero
43.1%
Reynaldo López
36.4%
Barrel % Allowedlg 8.0% · lower = better
JoJo Romero
8.1%
Reynaldo López
7.7%
xwOBA Allowedlg .315 · lower = better
JoJo Romero
.337
Reynaldo López
.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
JoJo Romero
2.064.94
lg xERA 4.10
now 2.70
3.77
Reynaldo López
2.064.94
lg xERA 4.10
now 3.31
4.30
WHIPlower is better
JoJo Romero
1.091.41
now 1.16
1.25
Reynaldo López
1.091.41
now 1.33
1.34

Volume · rest of season
Strikeoutshigher is better
JoJo Romero
4037
now 25
16
Reynaldo López
4037
now 31
24
Winshigher is better
JoJo Romero
.0002.80
now 0
00
Reynaldo López
.0002.80
now 2
12

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

If you already own them — trade angle
Hold · wait & seeJoJo Romero — hold.conf 0.50
SellReynaldo López — sell.conf 0.71
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