MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Roki Sasaki
Roki Sasaki
LAD · P
Change to
Portrait of Ryan Weathers
Ryan Weathers
NYY · 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

Roki Sasaki wins 2 (ERA, W); Ryan Weathers wins 2 (K, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Roki Sasaki
97.8
Ryan Weathers
95.8
Swinging-Strike %lg 11.0% · higher = better
Roki Sasaki
14.8%
Ryan Weathers
12.8%
Strikeout %lg 22.0% · higher = better
Roki Sasaki
23.6%
Ryan Weathers
26.8%
Chase %lg 28.5% · higher = better
Roki Sasaki
32.3%
Ryan Weathers
30.6%
Hard-Hit % Allowedlg 40.0% · lower = better
Roki Sasaki
43.9%
Ryan Weathers
42.2%
Barrel % Allowedlg 8.0% · lower = better
Roki Sasaki
11.4%
Ryan Weathers
9.6%
xwOBA Allowedlg .315 · lower = better
Roki Sasaki
.321
Ryan Weathers
.326
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
Roki Sasaki
3.095.02
lg xERA 4.10
now 4.59
4.26
Ryan Weathers
3.095.02
lg xERA 4.10
now 3.52
4.36
WHIPlower is better
Roki Sasaki
1.061.43
now 1.35
1.31
Ryan Weathers
1.061.43
now 1.14
1.23

Volume · rest of season
Strikeoutshigher is better
Roki Sasaki
4088.60
now 50
41
Ryan Weathers
4088.60
now 75
51
Winshigher is better
Roki Sasaki
.0005.20
now 3
24
Ryan Weathers
.0005.20
now 2
12

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

If you already own them — trade angle
Hold · leans sellRoki Sasaki — hold.conf 0.60
SellRyan Weathers — sell.conf 0.67
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