MLB Daily DeltaWeek 13 · June 19, 2026
Chase Petty
CIN · P
Change to
Portrait of Kumar Rocker
Kumar Rocker
TEX · 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

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

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Chase Petty
97.1
Kumar Rocker
94.4
Swinging-Strike %lg 11.0% · higher = better
Chase Petty
10.5%
Kumar Rocker
10.8%
Strikeout %lg 22.0% · higher = better
Chase Petty
6.3%
Kumar Rocker
18.5%
Chase %lg 28.5% · higher = better
Chase Petty
32.0%
Kumar Rocker
29.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Chase Petty
35.2%
Kumar Rocker
44.4%
Barrel % Allowedlg 8.0% · lower = better
Chase Petty
9.3%
Kumar Rocker
7.9%
xwOBA Allowedlg .315 · lower = better
Chase Petty
.363
Kumar Rocker
.347
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
Chase Petty
2.427.47
lg xERA 4.10
now 6.35
4.10
Kumar Rocker
2.427.47
lg xERA 4.10
now 3.54
4.70
WHIPlower is better
Chase Petty
1.171.49
now 1.24
1.30
Kumar Rocker
1.171.49
now 1.32
1.42

Volume · rest of season
Strikeoutshigher is better
Chase Petty
4094.40
now 2
16
Kumar Rocker
4094.40
now 44
68
Winshigher is better
Chase Petty
.0005.60
now 0
00
Kumar Rocker
.0005.60
now 2
24

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

If you already own them — trade angle
Sell HighChase Petty — sell high. His value is peaking; good time to trade him.conf 0.90
SellKumar Rocker — sell.conf 0.83
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