MLB Daily DeltaWeek 28 · October 2, 2026
JR Ritchie
ATL · P
Change to
Portrait of Spencer Arrighetti
Spencer Arrighetti
TOR · 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

JR Ritchie wins 1 (ERA); Spencer Arrighetti wins 1 (WHIP); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
JR Ritchie
94.7
Spencer Arrighetti
92.4
Swinging-Strike %lg 11.0% · higher = better
JR Ritchie
9.6%
Spencer Arrighetti
10.7%
Strikeout %lg 22.0% · higher = better
JR Ritchie
20.9%
Spencer Arrighetti
21.5%
Chase %lg 28.5% · higher = better
JR Ritchie
26.0%
Spencer Arrighetti
26.1%
Hard-Hit % Allowedlg 40.0% · lower = better
JR Ritchie
41.6%
Spencer Arrighetti
31.4%
Barrel % Allowedlg 8.0% · lower = better
JR Ritchie
9.6%
Spencer Arrighetti
9.2%
xwOBA Allowedlg .315 · lower = better
JR Ritchie
.345
Spencer Arrighetti
.349
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
JR Ritchie
26.30
lg xERA 4.10
now 4.56
4.79
Spencer Arrighetti
26.30
lg xERA 4.10
now 1.34
4.88
WHIPlower is better
JR Ritchie
.9901.61
now 1.44
1.47
Spencer Arrighetti
.9901.61
now 1.13
1.43

Volume · rest of season
Strikeoutshigher is better
JR Ritchie
4060.20
now 21
0
Spencer Arrighetti
4060.20
now 43
0
Winshigher is better
JR Ritchie
.0009.80
now 1
0–0
Spencer Arrighetti
.0009.80
now 7
0–0

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

If you already own them — trade angle
SellJR Ritchie — sell.conf 0.87
SellSpencer Arrighetti — sell.conf 0.90
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