MLB Daily DeltaWeek 19 · August 1, 2026
Portrait of Robbie Ray
Robbie Ray
SF · P
Change to
Portrait of Steven Matz
Steven Matz
TB · 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

Robbie Ray wins 2 (K, ERA); Steven Matz wins 2 (WHIP, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Robbie Ray
93.2
Steven Matz
93.3
Swinging-Strike %lg 11.0% · higher = better
Robbie Ray
11.9%
Steven Matz
10.2%
Strikeout %lg 22.0% · higher = better
Robbie Ray
20.9%
Steven Matz
18.2%
Chase %lg 28.5% · higher = better
Robbie Ray
29.0%
Steven Matz
27.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Robbie Ray
37.5%
Steven Matz
36.2%
Barrel % Allowedlg 8.0% · lower = better
Robbie Ray
8.4%
Steven Matz
12.4%
xwOBA Allowedlg .315 · lower = better
Robbie Ray
.324
Steven Matz
.356
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
Robbie Ray
4.035.28
lg xERA 4.10
now 4.45
4.31
Steven Matz
4.035.28
lg xERA 4.10
now 4.67
5.00
WHIPlower is better
Robbie Ray
1.171.47
now 1.40
1.39
Steven Matz
1.171.47
now 1.24
1.36

Volume · rest of season
Strikeoutshigher is better
Robbie Ray
4068.60
now 59
46
Steven Matz
4068.60
now 35
35
Winshigher is better
Robbie Ray
.0006.60
now 3
13
Steven Matz
.0006.60
now 4
25

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

If you already own them — trade angle
Sell HighRobbie Ray — sell high. His value is peaking; good time to trade him.conf 0.95
SellSteven Matz — sell.conf 0.90
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