MLB Daily DeltaWeek 25 · September 11, 2026
Jake Irvin
WSH · 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 11, 2 even. Take whoever fills a bigger need.

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

Jake Irvin wins 1 (K); Kumar Rocker wins 1 (ERA); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Jake Irvin
93.1
Kumar Rocker
94.5
Swinging-Strike %lg 11.0% · higher = better
Jake Irvin
10.8%
Kumar Rocker
12.4%
Strikeout %lg 22.0% · higher = better
Jake Irvin
22.2%
Kumar Rocker
21.4%
Chase %lg 28.5% · higher = better
Jake Irvin
24.8%
Kumar Rocker
31.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Jake Irvin
45.7%
Kumar Rocker
39.8%
Barrel % Allowedlg 8.0% · lower = better
Jake Irvin
10.6%
Kumar Rocker
7.6%
xwOBA Allowedlg .315 · lower = better
Jake Irvin
.351
Kumar Rocker
.329
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
Jake Irvin
2.865.91
lg xERA 4.10
now 5.23
4.90
Kumar Rocker
2.865.91
lg xERA 4.10
now 3.54
4.42
WHIPlower is better
Jake Irvin
1.251.46
now 1.35
1.39
Kumar Rocker
1.251.46
now 1.32
1.39

Volume · rest of season
Strikeoutshigher is better
Jake Irvin
4077.60
now 58
12
Kumar Rocker
4077.60
now 44
9
Winshigher is better
Jake Irvin
.0002.80
now 2
01
Kumar Rocker
.0002.80
now 2
01

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

If you already own them — trade angle
SellJake Irvin — sell.conf 0.90
SellKumar Rocker — sell.conf 0.70
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