MLB Daily DeltaWeek 27 · September 27, 2026
Robert Gasser
MIL · P
Change to
Portrait of Tyler Mahle
Tyler Mahle
ATL · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
▶
◀
WHIP
W
SV n/a

Robert Gasser wins 1 (WHIP); Tyler Mahle wins 1 (ERA); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Robert Gasser
92.9
Tyler Mahle
92.8
Swinging-Strike %lg 11.0% · higher = better
Robert Gasser
11.1%
Tyler Mahle
10.4%
Strikeout %lg 22.0% · higher = better
Robert Gasser
22.3%
Tyler Mahle
22.3%
Chase %lg 28.5% · higher = better
Robert Gasser
28.1%
Tyler Mahle
28.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Robert Gasser
34.0%
Tyler Mahle
37.1%
Barrel % Allowedlg 8.0% · lower = better
Robert Gasser
7.6%
Tyler Mahle
6.8%
xwOBA Allowedlg .315 · lower = better
Robert Gasser
.317
Tyler Mahle
.306
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
Robert Gasser
3.116.88
lg xERA 4.10
now 4.73
4.20
Tyler Mahle
3.116.88
lg xERA 4.10
now 6.04
3.95
WHIPlower is better
Robert Gasser
1.151.65
now 1.43
1.26
Tyler Mahle
1.151.65
now 1.54
1.30

Volume · rest of season
Strikeoutshigher is better
Robert Gasser
4079.80
now 12
0
Tyler Mahle
4079.80
now 57
0
Winshigher is better
Robert Gasser
.0001.48
now 0
0–0
Tyler Mahle
.0001.48
now 1
0–0

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

If you already own them — trade angle
Sell HighRobert Gasser — sell high. His value is peaking; good time to trade him.conf 0.81
Hold · steadyTyler Mahle — hold.conf 0.60
Tweet