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

Too close to call.

They split your categories 22, 1 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

Riley O'Brien wins 2 (W, SV); Tanner Scott wins 2 (ERA, WHIP); 1 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Riley O'Brien
97.8
Tanner Scott
96.8
Swinging-Strike %lg 11.0% · higher = better
Riley O'Brien
11.2%
Tanner Scott
19.8%
Strikeout %lg 22.0% · higher = better
Riley O'Brien
22.7%
Tanner Scott
31.6%
Chase %lg 28.5% · higher = better
Riley O'Brien
28.2%
Tanner Scott
41.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Riley O'Brien
41.8%
Tanner Scott
34.5%
Barrel % Allowedlg 8.0% · lower = better
Riley O'Brien
7.0%
Tanner Scott
7.0%
xwOBA Allowedlg .315 · lower = better
Riley O'Brien
.343
Tanner Scott
.275
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
Riley O'Brien
25.54
lg xERA 4.10
now 3.20
4.58
Tanner Scott
25.54
lg xERA 4.10
now 2.19
3.13
WHIPlower is better
Riley O'Brien
.9001.63
now 0.99
1.36
Tanner Scott
.9001.63
now 0.69
1.08

Volume · rest of season
Strikeoutshigher is better
Riley O'Brien
4037.20
now 27
5
Tanner Scott
4037.20
now 28
5
Winshigher is better
Riley O'Brien
.0004.20
now 3
01
Tanner Scott
.0004.20
now 1
00
Saveshigher is better
Riley O'Brien
.00019.20
now 14
23
Tanner Scott
.00019.20
now 5
11
If you already own them — trade angle
SellRiley O'Brien — sell.conf 0.83
BuyTanner Scott — buy.conf 0.89
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