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MLB · Final

Royals Edge Mariners in Thrilling Finish at Kauffman Stadium

Wednesday, September 17, 2025, 7:40 PM ET · Kauffman Stadium

Kansas City Royals 7, Seattle Mariners 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 Seattle Mariners vs Kansas City Royals?

Kansas City Royals beat Seattle Mariners 7-5 at Kauffman Stadium on September 17, 2025.

In a gripping encounter at Kauffman Stadium, the Kansas City Royals triumphed over the Seattle Mariners with a final score of 7-5. This victory marked a significant moment for the Royals, who had been struggling in recent weeks, while the Mariners had been riding high on a nine-game winning streak before this match.

The Royals came into this game with a home record of 76-76, while the Mariners boasted an away record of 83-69. Kansas City had been on a downward trajectory, winning only 3 of their last 10 games, and they were looking to turn their fortunes around after a recent loss to the Mariners where they fell 5-12. The Royals averaged 4.3 runs scored per game and allowed 5.6 runs during their last ten outings, indicating their struggles on both sides of the ball.

In contrast, the Mariners entered the game with an impressive 9-1 record over their last ten games, scoring an average of 6.8 runs while allowing only 3.0. Their recent form had been bolstered by a series of strong performances, including a 12-5 victory against the Royals just the day before. Seattle's away record of 3-1 in their last four games also highlighted their ability to perform on the road.

The matchup was particularly noteworthy as it concluded the series, with the Mariners having already secured the series win 2-1. The Royals were keen to salvage some pride in front of their home crowd. The game featured several key injuries that affected both teams. The Royals were without Maikel Garcia, Connor Seabold, Tony Gonsolin, James McArthur, and Beck Way, all of whom were on the injured list. For the Mariners, Brendan Donovan, Cole Wilcox, Matt Brash, Will Wilson, and Emerson Hancock were sidelined, impacting their roster depth.

As the game unfolded, the Royals took an early lead in the first inning when Salvador Perez homered to center field, scoring three runs. However, the Mariners responded swiftly in the second inning with a home run from Eugenio Suárez, narrowing the gap to 3-2. The back-and-forth nature of the game continued, with both teams exchanging leads as the innings progressed.

The Mariners briefly took the lead in the seventh inning with a sacrifice fly from Jonah Heim, but the Royals answered back in the eighth inning with a flurry of scoring. Adam Frazier hit a home run, followed by a series of runs that saw the Royals regain control of the game, ending the inning with a score of 7-4.

In the final inning, the Mariners managed to score once more, with a double play allowing Suárez to cross the plate, but it wasn't enough to overcome the Royals' lead. The game concluded with the Royals securing a much-needed victory, which could serve as a turning point for their season.

The conditions at Kauffman Stadium were favorable for baseball, contributing to an exciting atmosphere for fans. The Royals' victory was celebrated not only for the win itself but also for the resilience they showed against a formidable opponent. As the season progresses, both teams will look to build on their performances, with the Royals hoping to capitalize on this momentum and the Mariners aiming to bounce back from this unexpected loss.

Injury report

  • Maikel Garcia10-Day-ILHamstringKansas City Royals
  • Connor Seabold60-Day-ILLatKansas City Royals
  • Tony Gonsolin15-Day-ILElbowKansas City Royals
  • James McArthur60-Day-ILElbowKansas City Royals
  • Beck Way15-Day-ILShoulderKansas City Royals
  • Brendan Donovan7-Day ILConcussionSeattle Mariners
  • Cole Wilcox15-Day-ILObliqueSeattle Mariners
  • Matt Brash60-Day-ILLatSeattle Mariners
  • Will Wilson60-Day-ILThumbSeattle Mariners
  • Emerson Hancock15-Day-ILGroinSeattle Mariners

Recent form

Kansas City Royals

Last 10: 3-7Streak L14.3 scored · 5.6 allowed per game1-2 at home

  • L5-12vs Seattle MarinersSep 16
  • W10-3at Philadelphia PhilliesSep 14
  • L6-8at Philadelphia PhilliesSep 13
  • L2-8at Philadelphia PhilliesSep 12
  • L2-3at Cleveland GuardiansSep 11
  • W4-3at Cleveland GuardiansSep 10
  • L0-2at Cleveland GuardiansSep 9
  • L2-10at Cleveland GuardiansSep 8
  • L1-5vs Minnesota TwinsSep 7
  • W11-2vs Minnesota TwinsSep 6

Seattle Mariners

Last 10: 9-1Streak W96.8 scored · 3 allowed per game3-1 away

  • W12-5at Kansas City RoyalsSep 16
  • W5-3vs Los Angeles AngelsSep 14
  • W2-1vs Los Angeles AngelsSep 13
  • W7-6vs Los Angeles AngelsSep 12
  • W4-2vs St. Louis CardinalsSep 11
  • W5-3vs St. Louis CardinalsSep 10
  • W4-2vs St. Louis CardinalsSep 9
  • W18-2at Atlanta BravesSep 7
  • W10-2at Atlanta BravesSep 6
  • L1-4at Atlanta BravesSep 5

Standings

TeamGames behindLostStreakWin %Won
Houston-69W1.50771
Texas271L1.49369
Seattle574W2.47166
Athletics1786W1.38654
Los Angeles1887L2.37953
Chicago-66L1.52573
Cleveland369L1.50470
Minnesota6.573L1.47967
Detroit975W1.46064
Kansas City11.578L3.44362

How the scoring went

  1. 1st Inning0-3Perez homered to center (435 feet), Pasquantino scored and Garcia scored.
  2. 2nd Inning2-3Suárez homered to center (416 feet), Polanco scored.
  3. 7th Inning3-3Garver hit sacrifice fly to center, Suárez scored.
  4. 8th Inning4-3Crawford homered to right (386 feet).
  5. 8th Inning4-5Frazier homered to left (338 feet), Massey scored.
  6. 8th Inning4-6Jensen singled to center, Caglianone scored.
  7. 8th Inning4-7Witt Jr. doubled to left, Jensen scored on error, Witt Jr. safe at third on throwing error by left fielder Arozarena.
  8. 9th Inning5-7Canzone grounded into double play, second to shortstop to first, Suárez scored, Naylor out at second.

Win probability

Above the line favours Kansas City Royals, below favours Seattle Mariners.

Venue

  • Kauffman StadiumKansas City, Missouri
  • Attendance19127
  • OfficialsBill Miller, Roberto Ortiz, Ben May, Chad Fairchild

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Fixture data from the league feeds. The report was written from the recorded facts for this game and nothing else.