MLB Daily DeltaWeek 17 · July 21, 2026
Portrait of Mark Leiter Jr.
Mark Leiter Jr.
ATH · P
Change to
Portrait of Will Klein
Will Klein
LAD · P
Change to
Who's more valuable, rest of season

Will Klein.

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

Head-to-head
K
ERA
WHIP
W
SV

Will Klein wins 3 categories (K, ERA, W); Mark Leiter Jr. wins 1 (SV); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Mark Leiter Jr.
92.2
Will Klein
97.6
Swinging-Strike %lg 11.0% · higher = better
Mark Leiter Jr.
14.0%
Will Klein
10.1%
Strikeout %lg 22.0% · higher = better
Mark Leiter Jr.
26.4%
Will Klein
26.3%
Chase %lg 28.5% · higher = better
Mark Leiter Jr.
33.8%
Will Klein
30.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Mark Leiter Jr.
31.9%
Will Klein
38.1%
Barrel % Allowedlg 8.0% · lower = better
Mark Leiter Jr.
3.3%
Will Klein
2.9%
xwOBA Allowedlg .315 · lower = better
Mark Leiter Jr.
.316
Will Klein
.283
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
Mark Leiter Jr.
26.91
lg xERA 4.10
now 5.47
3.72
Will Klein
26.91
lg xERA 4.10
now 1.88
3.69
WHIPlower is better
Mark Leiter Jr.
.9001.63
now 1.46
1.24
Will Klein
.9001.63
now 1.04
1.24

Volume · rest of season
Strikeoutshigher is better
Mark Leiter Jr.
4030.60
now 25
20
Will Klein
4030.60
now 25
23
Winshigher is better
Mark Leiter Jr.
.0001.48
now 0
00
Will Klein
.0001.48
now 1
11
Saveshigher is better
Mark Leiter Jr.
.0005.60
now 4
24
Will Klein
.0005.60
now 1
02
If you already own them — trade angle
Hold · wait & seeMark Leiter Jr. — hold.conf 0.50
Hold · wait & seeWill Klein — hold.conf 0.50
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