MLB Daily DeltaWeek 25 · September 10, 2026
Carson Seymour
SF · P
Change to
Luis Gastelum
STL · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 00, 4 even. Take whoever fills a bigger need.

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

Carson Seymour wins 0 (none); Luis Gastelum wins 0 (none); 4 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Carson Seymour
97.1
Luis Gastelum
94.2
Swinging-Strike %lg 11.0% · higher = better
Carson Seymour
10.3%
Luis Gastelum
17.0%
Strikeout %lg 22.0% · higher = better
Carson Seymour
16.2%
Luis Gastelum
30.3%
Chase %lg 28.5% · higher = better
Carson Seymour
23.6%
Luis Gastelum
32.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Carson Seymour
39.2%
Luis Gastelum
33.3%
Barrel % Allowedlg 8.0% · lower = better
Carson Seymour
10.1%
Luis Gastelum
11.1%
xwOBA Allowedlg .315 · lower = better
Carson Seymour
.395
Luis Gastelum
.340
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
Carson Seymour
28.25
lg xERA 4.10
now 9.00
3.70
Luis Gastelum
28.25
lg xERA 4.10
now 5.40
3.70
WHIPlower is better
Carson Seymour
.9002.55
now 2.33
1.24
Luis Gastelum
.9002.55
now 1.80
1.24

Volume · rest of season
Strikeoutshigher is better
Carson Seymour
407.60
now 1
2
Luis Gastelum
407.60
now 1
2
Winshigher is better
Carson Seymour
.000.480
now 0
00
Luis Gastelum
.000.480
now 0
00

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

If you already own them — trade angle
Hold · wait & seeCarson Seymour — hold.conf 0.50
Hold · wait & seeLuis Gastelum — hold.conf 0.50
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