MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Mitch Keller
Mitch Keller
PIT · P
Change to
Robert Gasser
MIL · 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

Mitch Keller wins 2 (K, W); Robert Gasser wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Mitch Keller
93.3
Robert Gasser
92.9
Swinging-Strike %lg 11.0% · higher = better
Mitch Keller
9.7%
Robert Gasser
11.2%
Strikeout %lg 22.0% · higher = better
Mitch Keller
17.7%
Robert Gasser
22.0%
Chase %lg 28.5% · higher = better
Mitch Keller
29.4%
Robert Gasser
28.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Mitch Keller
42.3%
Robert Gasser
33.1%
Barrel % Allowedlg 8.0% · lower = better
Mitch Keller
7.4%
Robert Gasser
6.6%
xwOBA Allowedlg .315 · lower = better
Mitch Keller
.355
Robert Gasser
.315
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
Mitch Keller
3.825.31
lg xERA 4.10
now 4.35
4.98
Robert Gasser
3.825.31
lg xERA 4.10
now 4.73
4.15
WHIPlower is better
Mitch Keller
1.071.53
now 1.17
1.38
Robert Gasser
1.071.53
now 1.43
1.29

Volume · rest of season
Strikeoutshigher is better
Mitch Keller
4068.20
now 51
10
Robert Gasser
4068.20
now 12
8
Winshigher is better
Mitch Keller
.0007
now 5
11
Robert Gasser
.0007
now 0
00

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

If you already own them — trade angle
SellMitch Keller — sell.conf 0.90
Hold · steadyRobert Gasser — hold.conf 0.60
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