MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Ron Marinaccio
Ron Marinaccio
PIT · P
Change to
Tyler Schweitzer
CWS · 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

Ron Marinaccio wins 2 (K, W); Tyler Schweitzer wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Ron Marinaccio
93.8
Tyler Schweitzer
94.4
Swinging-Strike %lg 11.0% · higher = better
Ron Marinaccio
12.3%
Tyler Schweitzer
12.3%
Strikeout %lg 22.0% · higher = better
Ron Marinaccio
18.3%
Tyler Schweitzer
11.0%
Chase %lg 28.5% · higher = better
Ron Marinaccio
26.6%
Tyler Schweitzer
31.7%
Hard-Hit % Allowedlg 40.0% · lower = better
Ron Marinaccio
40.6%
Tyler Schweitzer
50.0%
Barrel % Allowedlg 8.0% · lower = better
Ron Marinaccio
7.7%
Tyler Schweitzer
9.1%
xwOBA Allowedlg .315 · lower = better
Ron Marinaccio
.339
Tyler Schweitzer
.342
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
Ron Marinaccio
28.25
lg xERA 4.10
now 4.06
4.49
Tyler Schweitzer
28.25
lg xERA 4.10
now 9.00
3.70
WHIPlower is better
Ron Marinaccio
.9402.30
now 1.26
1.37
Tyler Schweitzer
.9402.30
now 2.00
1.24

Volume · rest of season
Strikeoutshigher is better
Ron Marinaccio
4034.60
now 25
20
Tyler Schweitzer
4034.60
now 1
4
Winshigher is better
Ron Marinaccio
.0001.48
now 1
01
Tyler Schweitzer
.0001.48
now 0
00

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

If you already own them — trade angle
SellRon Marinaccio — sell.conf 0.79
Hold · wait & seeTyler Schweitzer — hold.conf 0.50
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