MLB Daily DeltaWeek 18 · July 28, 2026
Portrait of Jack Leiter
Jack Leiter
TEX · P
Change to
Portrait of Kyle Leahy
Kyle Leahy
STL · 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jack Leiter
96.7
Kyle Leahy
94.1
Swinging-Strike %lg 11.0% · higher = better
Jack Leiter
12.2%
Kyle Leahy
10.0%
Strikeout %lg 22.0% · higher = better
Jack Leiter
23.4%
Kyle Leahy
20.4%
Chase %lg 28.5% · higher = better
Jack Leiter
30.4%
Kyle Leahy
26.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Jack Leiter
39.9%
Kyle Leahy
50.0%
Barrel % Allowedlg 8.0% · lower = better
Jack Leiter
10.3%
Kyle Leahy
10.9%
xwOBA Allowedlg .315 · lower = better
Jack Leiter
.336
Kyle Leahy
.347
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
Jack Leiter
4.035.01
lg xERA 4.10
now 4.34
4.55
Kyle Leahy
4.035.01
lg xERA 4.10
now 4.25
4.79
WHIPlower is better
Jack Leiter
1.241.65
now 1.33
1.37
Kyle Leahy
1.241.65
now 1.56
1.36

Volume · rest of season
Strikeoutshigher is better
Jack Leiter
4088.40
now 74
54
Kyle Leahy
4088.40
now 46
38
Winshigher is better
Jack Leiter
.0008
now 3
13
Kyle Leahy
.0008
now 5
36

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

If you already own them — trade angle
SellJack Leiter — sell.conf 0.76
SellKyle Leahy — sell.conf 0.87
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