MLB Daily DeltaWeek 19 · August 5, 2026
Sean Sullivan
COL · P
Change to
Portrait of Zack Littell
Zack Littell
WSH · 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

Sean Sullivan wins 2 (ERA, WHIP); Zack Littell wins 2 (K, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Sean Sullivan
87.6
Zack Littell
91.7
Swinging-Strike %lg 11.0% · higher = better
Sean Sullivan
7.7%
Zack Littell
8.5%
Strikeout %lg 22.0% · higher = better
Sean Sullivan
14.0%
Zack Littell
15.0%
Chase %lg 28.5% · higher = better
Sean Sullivan
28.1%
Zack Littell
30.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Sean Sullivan
34.5%
Zack Littell
44.1%
Barrel % Allowedlg 8.0% · lower = better
Sean Sullivan
9.5%
Zack Littell
10.6%
xwOBA Allowedlg .315 · lower = better
Sean Sullivan
.335
Zack Littell
.373
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
Sean Sullivan
27.59
lg xERA 4.10
now 0.00
4.10
Zack Littell
27.59
lg xERA 4.10
now 5.01
5.42
WHIPlower is better
Sean Sullivan
.9001.65
now 0.67
1.30
Zack Littell
.9001.65
now 1.37
1.34

Volume · rest of season
Strikeoutshigher is better
Sean Sullivan
4048.20
now 2
20
Zack Littell
4048.20
now 35
25
Winshigher is better
Sean Sullivan
.0007
now 0
00
Zack Littell
.0007
now 5
25

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

If you already own them — trade angle
Hold · wait & seeSean Sullivan — hold.conf 0.55
Sell HighZack Littell — sell high. His value is peaking; good time to trade him.conf 0.95
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