MLB Daily DeltaWeek 19 · July 30, 2026
Portrait of Juan Mejia
Juan Mejia
COL · P
Change to
Portrait of Ron Marinaccio
Ron Marinaccio
PIT · P
Change to
Who's more valuable, rest of season

Juan Mejia.

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

Head-to-head
K
ERA
WHIP
W
SV

Juan Mejia wins 3 categories (K, ERA, SV); Ron Marinaccio wins 1 (WHIP); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Juan Mejia
97.4
Ron Marinaccio
93.8
Swinging-Strike %lg 11.0% · higher = better
Juan Mejia
12.8%
Ron Marinaccio
12.3%
Strikeout %lg 22.0% · higher = better
Juan Mejia
22.5%
Ron Marinaccio
18.3%
Chase %lg 28.5% · higher = better
Juan Mejia
31.5%
Ron Marinaccio
26.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Juan Mejia
39.4%
Ron Marinaccio
40.6%
Barrel % Allowedlg 8.0% · lower = better
Juan Mejia
3.6%
Ron Marinaccio
7.7%
xwOBA Allowedlg .315 · lower = better
Juan Mejia
.322
Ron Marinaccio
.339
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
Juan Mejia
3.286.78
lg xERA 4.10
now 6.00
4.15
Ron Marinaccio
3.286.78
lg xERA 4.10
now 4.06
4.50
WHIPlower is better
Juan Mejia
1.081.88
now 1.70
1.44
Ron Marinaccio
1.081.88
now 1.26
1.37

Volume · rest of season
Strikeoutshigher is better
Juan Mejia
4035.60
now 30
22
Ron Marinaccio
4035.60
now 25
21
Winshigher is better
Juan Mejia
.0001.48
now 1
01
Ron Marinaccio
.0001.48
now 1
01
Saveshigher is better
Juan Mejia
.0004.40
now 3
13
Ron Marinaccio
.0004.40
now 0
0
If you already own them — trade angle
Hold · leans sellJuan Mejia — hold.conf 0.60
SellRon Marinaccio — sell.conf 0.80
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