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FinalFinal lineupsAL West / AL Central

Seattle Mariners 4, Detroit Tigers 5

Final Score and Game Recap

Final score, pitching lines and standings context.

1:40 PM ET · Comerica ParkGame-day snapshotFinal lineups lockedCurrent 2026 season stats — updated Oct 20, 5:00 AM ET
T-Score34
Seattle Mariners
76–86 · 3rd AL West · T-Score 34
4
4–5
FINAL
Detroit Tigers
76–86 · 4th AL Central · T-Score 45
5
T-Score45
FINAL

Matchup at a glance

PitcherStat calculation
CategoryComparisonWhy
Starting pitcherTigersThe starters are close overall, but Flaherty owns the better strikeout and control profile.
Offense vs handTigersDetroit has produced the stronger offense against right-handed pitching.
Team strengthTigersDetroit leads 45–34 in T-Score, driven by stronger offense.

Starting pitchers

SEA
Luis Castillo RHP
Luis Castillo
Seattle Mariners
2026 season (MLB rank among qualified starters)
ERA
–
201st
WHIP
–
189th
K/9
–
132nd
BB/9
–
106th
P-Score38i
FIP
–
HR/9
–
200th
OPS/R
–
IP
–
Last 5 starts
DET
Jack Flaherty RHP
Jack Flaherty
Detroit Tigers
2026 season (MLB rank among qualified starters)
ERA
–
137th
WHIP
–
154th
K/9
–
24th
BB/9
–
197th
P-Score46i
FIP
–
HR/9
–
97th
OPS/R
–
IP
–
Last 5 starts
How the starters differ
·Castillo enters with a 6.69 road ERA; Flaherty owns a 4.66 ERA at home.

How the lineups match the starters' pitch mix

Pitch data coverage: partial. Usage and velocity only.

Castillo arsenal
PitchUsageVelo
Four-seam42%95.2
Slider25%85.6
Sinker18%95.4
Changeup15%87.4
Cutter0%92.3
Flaherty arsenal
PitchUsageVelo
Four-seam49%92.7
Slider24%85.0
Knuckle Curve20%78.1
Sinker4%90.9
Changeup3%85.4

Team OPS vs opposing starter's hand

Mariners vs RHP (Jack Flaherty)
21st
in MLB
0.712OPS
.600.700.800.9001.000
Tigers vs RHP (Luis Castillo)
14th
in MLB
0.723OPS
.600.700.800.9001.000

Lineups

Final lineupsOrder from the stored snapshot; treat as unofficial until the card is filed.Full lineup page
Lineups not announced

Neither club has posted a batting order. Handedness composition, H-Score leaders and batter-vs-pitcher samples appear here as soon as the first order is filed — typically two to three hours before first pitch.

Team comparison

ResultsSEASEA·DETDET
+25328th
Run differential
+3977th
76–86 Record76–86
Last 10 games
Seattle Mariners Recent form unavailable
Detroit Tigers Recent form unavailable
2026 head-to-head
Season Series
0—0
0 Games Played

Frequently asked

Who is starting for the Mariners?+
Luis Castillo is listed as the starter.
Who is starting for the Tigers?+
Jack Flaherty is listed as the starter.
What time does the game start?+
1:40 PM ET at Comerica Park.
Where is the game being played?+
Comerica Park, home of the Detroit Tigers.
Are the lineups confirmed?+
Not yet. Orders appear here when they are posted.
How do the starters compare on P-Score?+
Luis Castillo is at 38; Jack Flaherty is at 46. P-Score is PitcherStat's 0–100 season index for qualified starters.