MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Brad Keller
Brad Keller
PHI · P
Change to
Portrait of Mark Leiter Jr.
Mark Leiter Jr.
ATH · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 11, 3 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Brad Keller wins 1 (ERA); Mark Leiter Jr. wins 1 (WHIP); 3 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Brad Keller
97.0
Mark Leiter Jr.
92.2
Swinging-Strike %lg 11.0% · higher = better
Brad Keller
10.1%
Mark Leiter Jr.
14.0%
Strikeout %lg 22.0% · higher = better
Brad Keller
23.7%
Mark Leiter Jr.
26.4%
Chase %lg 28.5% · higher = better
Brad Keller
28.0%
Mark Leiter Jr.
33.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Brad Keller
31.8%
Mark Leiter Jr.
31.9%
Barrel % Allowedlg 8.0% · lower = better
Brad Keller
4.5%
Mark Leiter Jr.
3.3%
xwOBA Allowedlg .315 · lower = better
Brad Keller
.284
Mark Leiter Jr.
.316
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
Brad Keller
2.926.20
lg xERA 4.10
now 3.65
3.68
Mark Leiter Jr.
2.926.20
lg xERA 4.10
now 5.47
3.72
WHIPlower is better
Brad Keller
1.011.59
now 1.14
1.25
Mark Leiter Jr.
1.011.59
now 1.46
1.24

Volume · rest of season
Strikeoutshigher is better
Brad Keller
4037.20
now 28
5
Mark Leiter Jr.
4037.20
now 25
5
Winshigher is better
Brad Keller
.0002.80
now 2
01
Mark Leiter Jr.
.0002.80
now 0
00
Saveshigher is better
Brad Keller
.0005.60
now 3
01
Mark Leiter Jr.
.0005.60
now 4
11
If you already own them — trade angle
Hold · wait & seeBrad Keller — hold.conf 0.50
Hold · wait & seeMark Leiter Jr. — hold.conf 0.50
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