MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Dylan Lee
Dylan Lee
ATL · P
Change to
Portrait of Riley O'Brien
Riley O'Brien
STL · P
Change to
Who's more valuable, rest of season

Dylan Lee.

He projects to help you in more roto categories the rest of the way — strikeouts, ERA, and WHIP.

Head-to-head
K
ERA
WHIP
W
SV

Dylan Lee wins 3 categories (K, ERA, WHIP); Riley O'Brien wins 2 (W, SV).

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Dylan Lee
93.3
Riley O'Brien
97.8
Swinging-Strike %lg 11.0% · higher = better
Dylan Lee
19.2%
Riley O'Brien
11.2%
Strikeout %lg 22.0% · higher = better
Dylan Lee
31.4%
Riley O'Brien
22.7%
Chase %lg 28.5% · higher = better
Dylan Lee
35.6%
Riley O'Brien
28.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Dylan Lee
32.2%
Riley O'Brien
41.8%
Barrel % Allowedlg 8.0% · lower = better
Dylan Lee
5.4%
Riley O'Brien
7.0%
xwOBA Allowedlg .315 · lower = better
Dylan Lee
.245
Riley O'Brien
.343
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
Dylan Lee
25.89
lg xERA 4.10
now 1.30
2.47
Riley O'Brien
25.89
lg xERA 4.10
now 3.20
4.58
WHIPlower is better
Dylan Lee
.9001.66
now 0.61
1.09
Riley O'Brien
.9001.66
now 0.99
1.36

Volume · rest of season
Strikeoutshigher is better
Dylan Lee
4045.60
now 34
6
Riley O'Brien
4045.60
now 27
5
Winshigher is better
Dylan Lee
.0004.20
now 2
01
Riley O'Brien
.0004.20
now 3
01
Saveshigher is better
Dylan Lee
.00019.60
now 0
0
Riley O'Brien
.00019.60
now 14
23
If you already own them — trade angle
BuyDylan Lee — buy.conf 0.92
SellRiley O'Brien — sell.conf 0.83
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