MLB Daily DeltaWeek 18 · July 23, 2026
Portrait of Kumar Rocker
Kumar Rocker
TEX · P
Change to
Shane Bieber
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

Kumar Rocker wins 2 (K, W); Shane Bieber wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kumar Rocker
94.4
Shane Bieber
92.2
Swinging-Strike %lg 11.0% · higher = better
Kumar Rocker
12.3%
Shane Bieber
11.8%
Strikeout %lg 22.0% · higher = better
Kumar Rocker
20.9%
Shane Bieber
17.6%
Chase %lg 28.5% · higher = better
Kumar Rocker
31.1%
Shane Bieber
30.7%
Hard-Hit % Allowedlg 40.0% · lower = better
Kumar Rocker
42.3%
Shane Bieber
53.2%
Barrel % Allowedlg 8.0% · lower = better
Kumar Rocker
7.3%
Shane Bieber
11.7%
xwOBA Allowedlg .315 · lower = better
Kumar Rocker
.330
Shane Bieber
.426
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
Kumar Rocker
2.566.98
lg xERA 4.10
now 3.54
4.44
Shane Bieber
2.566.98
lg xERA 4.10
now 6.00
4.10
WHIPlower is better
Kumar Rocker
1.022.28
now 1.32
1.35
Shane Bieber
1.022.28
now 2.00
1.30

Volume · rest of season
Strikeoutshigher is better
Kumar Rocker
4059.20
now 44
39
Shane Bieber
4059.20
now 6
36
Winshigher is better
Kumar Rocker
.0004.20
now 2
13
Shane Bieber
.0004.20
now 0
00

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

If you already own them — trade angle
SellKumar Rocker — sell.conf 0.71
Hold · wait & seeShane Bieber — hold.conf 0.50
Tweet