MLB Daily DeltaWeek 19 · August 4, 2026
Portrait of Bailey Ober
Bailey Ober
MIN · P
Change to
Portrait of Spencer Arrighetti
Spencer Arrighetti
TOR · 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

Bailey Ober wins 2 (ERA, WHIP); Spencer Arrighetti wins 2 (K, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Bailey Ober
88.2
Spencer Arrighetti
92.4
Swinging-Strike %lg 11.0% · higher = better
Bailey Ober
9.7%
Spencer Arrighetti
10.7%
Strikeout %lg 22.0% · higher = better
Bailey Ober
17.2%
Spencer Arrighetti
22.5%
Chase %lg 28.5% · higher = better
Bailey Ober
28.8%
Spencer Arrighetti
26.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Bailey Ober
32.6%
Spencer Arrighetti
30.6%
Barrel % Allowedlg 8.0% · lower = better
Bailey Ober
9.8%
Spencer Arrighetti
7.7%
xwOBA Allowedlg .315 · lower = better
Bailey Ober
.325
Spencer Arrighetti
.345
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
Bailey Ober
26.11
lg xERA 4.10
now 4.59
4.33
Spencer Arrighetti
26.11
lg xERA 4.10
now 1.34
4.75
WHIPlower is better
Bailey Ober
1.011.55
now 1.22
1.31
Spencer Arrighetti
1.011.55
now 1.13
1.43

Volume · rest of season
Strikeoutshigher is better
Bailey Ober
4051.60
now 46
33
Spencer Arrighetti
4051.60
now 43
39
Winshigher is better
Bailey Ober
110
now 6
35
Spencer Arrighetti
110
now 7
48

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

If you already own them — trade angle
SellBailey Ober — sell.conf 0.66
Sell HighSpencer Arrighetti — sell high. His value is peaking; good time to trade him.conf 0.85
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