MLB Daily DeltaWeek 27 · September 27, 2026
Portrait of Davis Martin
Davis Martin
CWS · 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 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
▶
◀
WHIP
W
SV n/a

Davis Martin wins 1 (WHIP); 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
Davis Martin
93.9
Kumar Rocker
94.5
Swinging-Strike %lg 11.0% · higher = better
Davis Martin
11.3%
Kumar Rocker
12.5%
Strikeout %lg 22.0% · higher = better
Davis Martin
19.8%
Kumar Rocker
21.4%
Chase %lg 28.5% · higher = better
Davis Martin
31.8%
Kumar Rocker
31.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Davis Martin
44.7%
Kumar Rocker
40.0%
Barrel % Allowedlg 8.0% · lower = better
Davis Martin
6.5%
Kumar Rocker
7.5%
xwOBA Allowedlg .315 · lower = better
Davis Martin
.330
Kumar Rocker
.324
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
Davis Martin
25.44
lg xERA 4.10
now 2.00
4.46
Kumar Rocker
25.44
lg xERA 4.10
now 3.54
4.34
WHIPlower is better
Davis Martin
.9001.54
now 0.99
1.36
Kumar Rocker
.9001.54
now 1.32
1.38

Volume · rest of season
Strikeoutshigher is better
Davis Martin
4099.40
now 71
0
Kumar Rocker
4099.40
now 44
0
Winshigher is better
Davis Martin
.00011.20
now 8
0–0
Kumar Rocker
.00011.20
now 2
0–0

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

If you already own them — trade angle
SellDavis Martin — sell.conf 0.72
SellKumar Rocker — sell.conf 0.66
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