MLB Daily DeltaWeek 17 · July 21, 2026
Portrait of Dennis Santana
Dennis Santana
PIT · P
Change to
Portrait of Juan Mejia
Juan Mejia
COL · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22, 1 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Dennis Santana wins 2 (WHIP, W); Juan Mejia wins 2 (K, ERA); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Dennis Santana
94.1
Juan Mejia
97.4
Swinging-Strike %lg 11.0% · higher = better
Dennis Santana
12.9%
Juan Mejia
13.0%
Strikeout %lg 22.0% · higher = better
Dennis Santana
20.2%
Juan Mejia
22.6%
Chase %lg 28.5% · higher = better
Dennis Santana
34.6%
Juan Mejia
32.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Dennis Santana
40.7%
Juan Mejia
39.7%
Barrel % Allowedlg 8.0% · lower = better
Dennis Santana
9.8%
Juan Mejia
4.0%
xwOBA Allowedlg .315 · lower = better
Dennis Santana
.351
Juan Mejia
.317
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
Dennis Santana
2.826.91
lg xERA 4.10
now 4.81
3.76
Juan Mejia
2.826.91
lg xERA 4.10
now 6.00
3.73
WHIPlower is better
Dennis Santana
1.071.88
now 1.48
1.25
Juan Mejia
1.071.88
now 1.70
1.26

Volume · rest of season
Strikeoutshigher is better
Dennis Santana
4035.60
now 19
17
Juan Mejia
4035.60
now 30
26
Winshigher is better
Dennis Santana
.5202.48
now 2
12
Juan Mejia
.5202.48
now 1
11
Saveshigher is better
Dennis Santana
.0004.40
now 2
12
Juan Mejia
.0004.40
now 3
23
If you already own them — trade angle
Hold · wait & seeDennis Santana — hold.conf 0.50
Buy LowJuan Mejia — buy low. The dip is a window to acquire.conf 0.90
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