MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of Ryan Weathers
Ryan Weathers
NYY · 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

Ryan Weathers 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
Ryan Weathers
95.8
Tyler Mahle
92.8
Swinging-Strike %lg 11.0% · higher = better
Ryan Weathers
12.1%
Tyler Mahle
10.4%
Strikeout %lg 22.0% · higher = better
Ryan Weathers
25.2%
Tyler Mahle
22.3%
Chase %lg 28.5% · higher = better
Ryan Weathers
28.9%
Tyler Mahle
28.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Ryan Weathers
40.6%
Tyler Mahle
37.1%
Barrel % Allowedlg 8.0% · lower = better
Ryan Weathers
8.6%
Tyler Mahle
6.8%
xwOBA Allowedlg .315 · lower = better
Ryan Weathers
.319
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
Ryan Weathers
2.517.05
lg xERA 4.10
now 3.52
4.24
Tyler Mahle
2.517.05
lg xERA 4.10
now 6.04
3.95
WHIPlower is better
Ryan Weathers
.9801.70
now 1.14
1.25
Tyler Mahle
.9801.70
now 1.54
1.30

Volume · rest of season
Strikeoutshigher is better
Ryan Weathers
40105
now 75
0
Tyler Mahle
40105
now 57
0
Winshigher is better
Ryan Weathers
.0002.80
now 2
0–0
Tyler Mahle
.0002.80
now 1
0–0

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

If you already own them — trade angle
Hold · leans sellRyan Weathers — hold.conf 0.60
Hold · steadyTyler Mahle — hold.conf 0.60
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