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MLB · Final

Mariners Secure Victory Over Royals in Close Contest

Thursday, September 18, 2025, 2:10 PM ET · Kauffman Stadium

Seattle Mariners 2, Kansas City Royals 0, 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?

Seattle Mariners beat Kansas City Royals 2-0 at Kauffman Stadium on September 18, 2025.

In a tightly contested game at Kauffman Stadium, the Seattle Mariners defeated the Kansas City Royals with a final score of 2-0. This victory allowed the Mariners to clinch the series 2-1 against the Royals. The Mariners, currently holding an away record of 84-69, have demonstrated strong performance this season, particularly in their last ten games where they posted a record of 9-1, with an average of 7.2 runs scored and only 3.3 runs allowed per game. This win also marks a continuation of their competitive edge as they seek to solidify their position in the league.

The Royals, on the other hand, have struggled in their recent outings, with a record of 76-77 overall and a 3-7 mark in their last ten games. They managed to score an average of 3.9 runs while allowing 5.9 runs during this stretch. Despite their recent challenges, the Royals had a moment of triumph just a day prior, winning against the Mariners 7-5 on September 17. However, they were unable to maintain that momentum in this latest matchup.

In terms of home and away performance, the Mariners have excelled, boasting a home record of 6-0 in their last six games, while the Royals have struggled at home, with a record of 1-2 in their last three home games leading up to this contest. The Mariners' recent form has been bolstered by their strong offensive output, including a notable 18-2 victory against the Atlanta Braves earlier in the month.

Injuries have impacted both teams, with the Royals facing significant challenges. Maikel Garcia is on the 10-Day Injured List due to a hamstring issue, while Connor Seabold and James McArthur are on the 60-Day IL with lat and elbow injuries, respectively. Additionally, Tony Gonsolin and Beck Way are also sidelined with elbow and shoulder injuries, which have further strained the Royals' roster. The Mariners are not without their own injury concerns, as Brendan Donovan is on the 7-Day IL with a concussion, and Cole Wilcox is on the 15-Day IL with an oblique injury. Matt Brash and Will Wilson are also on the 60-Day IL, with Brash dealing with a lat issue and Wilson with a thumb injury, while Emerson Hancock is on the 15-Day IL due to a groin injury.

The scoring plays in the game were critical, with the Mariners taking an early lead in the second inning when Polanco doubled to right field, allowing Naylor to score. The Mariners extended their lead in the eighth inning when Crawford doubled to right, bringing Robles home. The Royals were unable to respond with any runs, resulting in a shutout.

The market had reflected the competitive nature of the matchup, with odds provided by various sportsbooks indicating a challenging environment for the Royals, as they faced a home win probability of 0.0% at the game's conclusion. This statistic underscores the difficulties the Royals encountered throughout the game.

As the season progresses, both teams will look to address their injury concerns and capitalize on their strengths. The Mariners will aim to build on this victory as they continue their campaign, while the Royals will seek to regroup and find ways to improve their performance in the remaining games of the season.

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 W13.9 scored · 5.9 allowed per game1-2 at home

  • W7-5vs Seattle MarinersSep 17
  • 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

Seattle Mariners

Last 10: 9-1Streak L17.2 scored · 3.3 allowed per game3-1 away

  • L5-7at Kansas City RoyalsSep 17
  • 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

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. 2nd Inning1-0Polanco doubled to right, Naylor scored.
  2. 8th Inning2-0Crawford doubled to right, Robles scored.

Win probability

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

Venue

  • Kauffman StadiumKansas City, Missouri
  • Attendance18137
  • OfficialsRoberto Ortiz, Ben May, Chad Fairchild, Bill Miller

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