MLB Daily DeltaWeek 25 · September 11, 2026
Portrait of Luis Severino
Luis Severino
ATH · P
Change to
Quinn Mathews
STL · P
Change to
Who's more valuable, rest of season

Quinn Mathews.

He projects to help you in more roto categories the rest of the way — ERA and WHIP. Luis Severino’s box score looks better right now, but the luck-stripped projection flips it.

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

Quinn Mathews wins 2 categories (ERA, WHIP); Luis Severino wins 1 (K); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Luis Severino
96.9
Quinn Mathews
93.6
Swinging-Strike %lg 11.0% · higher = better
Luis Severino
10.9%
Quinn Mathews
11.7%
Strikeout %lg 22.0% · higher = better
Luis Severino
24.0%
Quinn Mathews
20.4%
Chase %lg 28.5% · higher = better
Luis Severino
31.3%
Quinn Mathews
26.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Luis Severino
38.7%
Quinn Mathews
36.2%
Barrel % Allowedlg 8.0% · lower = better
Luis Severino
8.7%
Quinn Mathews
2.1%
xwOBA Allowedlg .315 · lower = better
Luis Severino
.318
Quinn Mathews
.291
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
Luis Severino
3.364.45
lg xERA 4.10
now 4.16
4.21
Quinn Mathews
3.364.45
lg xERA 4.10
now 3.60
4.10
WHIPlower is better
Luis Severino
1.102
now 1.47
1.41
Quinn Mathews
1.102
now 1.80
1.30

Volume · rest of season
Strikeoutshigher is better
Luis Severino
4089.80
now 65
12
Quinn Mathews
4089.80
now 3
6
Winshigher is better
Luis Severino
.0002.80
now 2
01
Quinn Mathews
.0002.80
now 0
00

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

If you already own them — trade angle
Hold · leans sellLuis Severino — hold.conf 0.60
Buy LowQuinn Mathews — buy low. The dip is a window to acquire.conf 0.77
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