MLB Daily DeltaWeek 17 · July 22, 2026
Portrait of Kumar Rocker
Kumar Rocker
TEX · P
Change to
Portrait of Matthew Liberatore
Matthew Liberatore
STL · 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 (ERA, WHIP); Matthew Liberatore wins 2 (K, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kumar Rocker
94.4
Matthew Liberatore
94.5
Swinging-Strike %lg 11.0% · higher = better
Kumar Rocker
12.1%
Matthew Liberatore
10.7%
Strikeout %lg 22.0% · higher = better
Kumar Rocker
20.5%
Matthew Liberatore
21.4%
Chase %lg 28.5% · higher = better
Kumar Rocker
30.9%
Matthew Liberatore
29.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Kumar Rocker
43.2%
Matthew Liberatore
42.6%
Barrel % Allowedlg 8.0% · lower = better
Kumar Rocker
7.7%
Matthew Liberatore
9.5%
xwOBA Allowedlg .315 · lower = better
Kumar Rocker
.334
Matthew Liberatore
.350
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
3.015.40
lg xERA 4.10
now 3.54
4.52
Matthew Liberatore
3.015.40
lg xERA 4.10
now 4.35
4.87
WHIPlower is better
Kumar Rocker
1.251.57
now 1.32
1.36
Matthew Liberatore
1.251.57
now 1.50
1.38

Volume · rest of season
Strikeoutshigher is better
Kumar Rocker
4063.80
now 44
40
Matthew Liberatore
4063.80
now 57
47
Winshigher is better
Kumar Rocker
.0005.20
now 2
13
Matthew Liberatore
.0005.20
now 3
24

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

If you already own them — trade angle
SellKumar Rocker — sell.conf 0.74
SellMatthew Liberatore — sell.conf 0.90
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