MLB Daily DeltaWeek 18 · July 28, 2026
Portrait of Kyle Leahy
Kyle Leahy
STL · P
Change to
Portrait of Luis Severino
Luis Severino
ATH · 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

Kyle Leahy wins 2 (WHIP, W); Luis Severino wins 2 (K, ERA); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kyle Leahy
94.1
Luis Severino
96.9
Swinging-Strike %lg 11.0% · higher = better
Kyle Leahy
10.0%
Luis Severino
10.9%
Strikeout %lg 22.0% · higher = better
Kyle Leahy
20.4%
Luis Severino
24.0%
Chase %lg 28.5% · higher = better
Kyle Leahy
26.0%
Luis Severino
31.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Kyle Leahy
50.0%
Luis Severino
38.7%
Barrel % Allowedlg 8.0% · lower = better
Kyle Leahy
10.9%
Luis Severino
8.7%
xwOBA Allowedlg .315 · lower = better
Kyle Leahy
.347
Luis Severino
.318
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
Kyle Leahy
3.915.04
lg xERA 4.10
now 4.25
4.79
Luis Severino
3.915.04
lg xERA 4.10
now 4.16
4.19
WHIPlower is better
Kyle Leahy
1.281.64
now 1.56
1.36
Luis Severino
1.281.64
now 1.47
1.41

Volume · rest of season
Strikeoutshigher is better
Kyle Leahy
4075.80
now 46
38
Luis Severino
4075.80
now 65
49
Winshigher is better
Kyle Leahy
.0008
now 5
36
Luis Severino
.0008
now 2
12

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

If you already own them — trade angle
SellKyle Leahy — sell.conf 0.87
Hold · steadyLuis Severino — hold.conf 0.60
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