MLB Daily DeltaWeek 18 · July 29, 2026
Portrait of Greg Weissert
Greg Weissert
BOS · P
Change to
Zack Kelly
BOS · P
Change to
Who's more valuable, rest of season

Greg Weissert.

He projects to help you in more roto categories the rest of the way — strikeouts. Zack Kelly’s box score looks better right now, but the luck-stripped projection flips it.

Head-to-head
K
ERA
WHIP
W
SV n/a

Greg Weissert wins 1 categories (K); Zack Kelly wins 0 (none); 3 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Greg Weissert
93.9
Zack Kelly
96.1
Swinging-Strike %lg 11.0% · higher = better
Greg Weissert
11.1%
Zack Kelly
9.2%
Strikeout %lg 22.0% · higher = better
Greg Weissert
21.7%
Zack Kelly
19.7%
Chase %lg 28.5% · higher = better
Greg Weissert
34.1%
Zack Kelly
28.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Greg Weissert
32.8%
Zack Kelly
38.8%
Barrel % Allowedlg 8.0% · lower = better
Greg Weissert
4.9%
Zack Kelly
8.2%
xwOBA Allowedlg .315 · lower = better
Greg Weissert
.293
Zack Kelly
.368
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
Greg Weissert
2.944.61
lg xERA 4.10
now 4.24
3.70
Zack Kelly
2.944.61
lg xERA 4.10
now 3.31
3.70
WHIPlower is better
Greg Weissert
1.171.48
now 1.41
1.24
Zack Kelly
1.171.48
now 1.29
1.24

Volume · rest of season
Strikeoutshigher is better
Greg Weissert
4027.60
now 22
17
Zack Kelly
4027.60
now 14
16
Winshigher is better
Greg Weissert
.000.480
now 0
00
Zack Kelly
.000.480
now 0
00

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

If you already own them — trade angle
Hold · wait & seeGreg Weissert — hold.conf 0.50
Hold · wait & seeZack Kelly — hold.conf 0.50
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