Mariners Edge Cubs in Extra-Inning Thriller
Friday, August 21, 2026, 10:10 PM ET · T-Mobile Park
Seattle Mariners 6, Chicago Cubs 5, final. Our MLB picks are sealed as a hash before kickoff and settled in public, losses included.
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Quick answers
Who won Chicago Cubs vs Seattle Mariners?
Seattle Mariners beat Chicago Cubs 6-5 at T-Mobile Park on August 21, 2026.
Who was favored in Chicago Cubs vs Seattle Mariners?
Seattle Mariners were the favorite at DraftKings, moneyline -105 (about 51% implied). The favorite won.
In a gripping contest at T-Mobile Park, the Seattle Mariners triumphed over the Chicago Cubs with a final score of 6-5 after ten innings. This victory allowed the Mariners to win the series 2-1 against the Cubs, showcasing their resilience in a tightly contested matchup. The game featured a series of home runs and dramatic scoring plays, making it a thrilling experience for fans.
The Mariners entered the game with a home record of 61-68, while the Cubs boasted a stronger away record of 74-55. In their previous ten games, the Mariners had a record of 3-7, with an average of 3.1 runs scored and 6.5 runs allowed per game. Their recent form showed a streak of one loss, with their last five games yielding a record of 2-3, scoring an average of 4.2 runs while allowing 9.2. In contrast, the Cubs had been in better form, winning 7 of their last 10 games and averaging 5.8 runs scored against 5.2 allowed. They came into this game with a two-game winning streak.
At home, the Mariners had struggled recently, holding a record of 0-2 in their last two games at T-Mobile Park. The Cubs, meanwhile, had a solid away record of 4-1 in their last five games. The Mariners had previously faced the Cubs in a series earlier in the season, where the Cubs won two of three games, but Seattle managed to turn the tide in this latest encounter.
In terms of injuries, the Mariners were without Victor Robles due to personal reasons, Cole Wilcox on the 15-day injured list with an oblique issue, Brendan Donovan on the 7-day injured list with a concussion, Matt Brash on the 60-day injured list with a lat injury, and Brennen Davis also on the 60-day injured list due to a hamstring problem. The Cubs were missing Edward Cabrera on the 15-day injured list with a finger injury, Gavin Hollowell on the 15-day injured list with a shoulder issue, Shelby Miller on the 60-day injured list with an elbow injury, Jacob Webb who was day-to-day with a forearm issue, and Tyler Austin on the 60-day injured list with a knee injury.
The betting market reflected a closely matched game, with DraftKings pricing the Mariners at -105 and the Cubs at -103, indicating a competitive matchup. The spread was set at 1.5, with a total of 7.5 runs for the game. The odds for the over were -113, while the under was at -107.
The game began with the Cubs taking an early lead as Crow-Armstrong homered to right center, followed by Bregman hitting another homer, bringing the score to 3-0 in the first inning. However, the Mariners responded in the second inning with a powerful display, as Raleigh homered, scoring three runs to tie the game at 3-3. Donovan then singled, allowing Young to score, giving the Mariners a 4-3 lead.
As the game progressed, Arozarena's single in the fifth inning pushed the Mariners ahead 5-3. The Cubs fought back, with Happ hitting a homer in the eighth inning to level the score at 5-5. In a tense final inning, the game went into extra innings. In the tenth, Rivas singled to center, allowing Arozarena to score, sealing the victory for the Mariners at 6-5.
The conditions at T-Mobile Park were conducive for a competitive game, with fans witnessing a back-and-forth battle that kept them on the edge of their seats. Viewers were treated to several home runs and key plays that defined the outcome of the match. The Mariners' ability to capitalize on scoring opportunities and their strong performance in the clutch ultimately led to their victory over the Cubs.
Odds
| Book | Spread | Total | Moneyline |
|---|---|---|---|
| DraftKings | SEA -105 | 7.5 o -113 / u -107 | Chicago Cubs -103 · Seattle Mariners -105 |
Injury report
- Victor RoblesbereavementPersonalSeattle Mariners
- Cole Wilcox15-Day-ILObliqueSeattle Mariners
- Brendan Donovan7-Day ILConcussionSeattle Mariners
- Matt Brash60-Day-ILLatSeattle Mariners
- Brennen Davis60-Day-ILHamstringSeattle Mariners
- Edward Cabrera15-Day-ILFingerChicago Cubs
- Gavin Hollowell15-Day-ILShoulderChicago Cubs
- Shelby Miller60-Day-ILElbowChicago Cubs
- Jacob WebbDay-To-DayForearmChicago Cubs
- Tyler Austin60-Day-ILKneeChicago Cubs
Recent form
Seattle Mariners
Last 10: 3-7Streak L13.1 scored · 6.5 allowed per game0-2 at home
- L4-7at Milwaukee BrewersAug 20
- W7-5at Milwaukee BrewersAug 19
- L0-22at Milwaukee BrewersAug 18
- W3-2at Houston AstrosAug 16
- L7-10at Houston AstrosAug 15
- W1-0at New York YankeesAug 13
- L5-10at New York YankeesAug 12
- L1-4at New York YankeesAug 11
- L2-3vs Tampa Bay RaysAug 9
- L1-2vs Tampa Bay RaysAug 8
Chicago Cubs
Last 10: 7-3Streak W25.8 scored · 5.2 allowed per game4-1 away
- W4-3vs Chicago White SoxAug 19
- W7-5vs Chicago White SoxAug 18
- L4-11vs St. Louis CardinalsAug 16
- L4-8vs St. Louis CardinalsAug 15
- W3-0vs St. Louis CardinalsAug 14
- L0-7at Washington NationalsAug 13
- W12-6at Washington NationalsAug 12
- W8-6at Washington NationalsAug 11
- W10-2at Kansas City RoyalsAug 9
- W6-4at Kansas City RoyalsAug 8
Standings
| Team | Games behind | Lost | Streak | Win % | Won |
|---|---|---|---|---|---|
| Milwaukee | - | 54 | L1 | .617 | 87 |
| Chicago | 8 | 62 | W1 | .560 | 79 |
| St. Louis | 17 | 71 | L1 | .496 | 70 |
| Pittsburgh | 18 | 72 | W1 | .489 | 69 |
| Cincinnati | 19.5 | 73 | W2 | .479 | 67 |
| Houston | - | 69 | W2 | .511 | 72 |
| Texas | 2 | 71 | W1 | .496 | 70 |
| Seattle | 6 | 75 | L1 | .468 | 66 |
| Athletics | 17 | 86 | W2 | .390 | 55 |
| Los Angeles | 18.5 | 87 | L2 | .379 | 53 |
How the scoring went
- 1st Inning1-0Crow-Armstrong homered to right center (367 feet).
- 1st Inning3-0Bregman homered to left (373 feet), Busch scored.
- 2nd Inning3-3Raleigh homered to left center (410 feet), Naylor scored and Ward scored.
- 2nd Inning3-4Donovan singled to right, Young scored.
- 5th Inning3-5Arozarena singled to center, Rodden scored.
- 8th Inning4-5Happ homered to right center (432 feet).
- 9th Inning5-5Bregman homered to left center (405 feet).
- 10th Inning5-6Rivas singled to center, Arozarena scored, Naylor to second.
Win probability
Above the line favours Seattle Mariners, below favours Chicago Cubs.
Venue
- T-Mobile ParkSeattle, Washington
- Attendance46018
- OfficialsBrennan Miller, Ryan Blakney, Ben May, Chris Conroy
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These two, other days
- Cubs Dominate Mariners in 19-2 RoutAug 23, 2026
- Mariners Edge Cubs in Thrilling 5-4 VictoryAug 22, 2026
- Cubs Dominate Mariners in 7-1 VictoryMar 21, 2026
- Cubs Defeat Mariners 7-4 in Sloan Park ShowdownMar 12, 2026