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MLB · Final

Red Sox Complete Sweep Over Royals in Kansas City

Monday, May 18, 2026, 7:10 PM ET · Kauffman Stadium

Boston Red Sox 3, Kansas City Royals 1, 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 Boston Red Sox vs Kansas City Royals?

Boston Red Sox beat Kansas City Royals 3-1 at Kauffman Stadium on May 18, 2026.

Who was favored in Boston Red Sox vs Kansas City Royals?

Boston Red Sox were the favorite at DraftKings, moneyline -111 (about 53% implied). The favorite won.

The Boston Red Sox secured a decisive victory against the Kansas City Royals, winning the game 3-1 at Kauffman Stadium. This result not only marked the end of the series but also completed a clean sweep for the Red Sox, who won all three games against the Royals. The Royals now sit at a home record of 20-28, while the Red Sox improve to 20-27 on the season.

In terms of recent form, the Royals have struggled, with a record of 3-7 over their last ten games. They are currently on a one-game winning streak, having defeated the St. Louis Cardinals 2-0 in their previous outing. However, their scoring average has been low, with the team averaging 3.6 runs scored per game while allowing 4.4 runs in that span. The Royals have won only two of their last five home games, reflecting their difficulties at Kauffman Stadium, where they have a home record of 2-3 in their last five.

The Red Sox, on the other hand, have a record of 3-6-1 in their last ten games, with their most recent performance resulting in a loss to the Atlanta Braves, where they fell 1-8. The Red Sox have averaged just 1.8 runs scored per game in their last ten outings, while allowing 3.1 runs. Their away record stands at 1-2 in their last three games, indicating challenges on the road as well.

Historically, the Royals have not fared well against the Red Sox, holding a 2-4 record in their recent meetings. In the 2025 season, the teams faced off multiple times, with the Royals winning one game and losing five. Their last encounter before this series was on May 11, 2025, when the Royals lost 1-3 at home.

Injury concerns have also plagued the Royals, with several key players sidelined. Maikel Garcia is on the 10-Day Injured List due to a hamstring issue, while Connor Seabold, Tony Gonsolin, and James McArthur are on the 60-Day Injured List for various ailments. Beck Way is also on the 15-Day Injured List with a shoulder injury. The Red Sox have their own injury issues, with Ceddanne Rafaela and Adley Rutschman listed as day-to-day with quadriceps and elbow injuries, respectively. Johan Oviedo, Kutter Crawford, and Zack Kelly are on the 60-Day Injured List, all dealing with elbow or forearm injuries.

The betting market, as provided by DraftKings, favored the Red Sox with odds of -111 for the away team, while the Royals were slightly behind at -108 for the home team. The spread was set at 1.5, with a total of 9.0 runs for the game. The over was priced at -113, while the under was at -106.

Conditions during the game were typical for a spring evening in Kansas City, which can often influence play. Fans at Kauffman Stadium witnessed a competitive matchup with significant moments, including a notable home run by Contreras in the sixth inning, which brought in Gasper and gave the Red Sox a 2-0 lead. A sacrifice fly by Duran in the seventh inning extended the lead to 3-0 before the Royals managed to get on the board with a double from Caglianone that scored Jensen.

As the game concluded, the Royals' chances of winning were virtually nil, with a final home win probability of 0.0%. The Red Sox's ability to capitalize on their scoring opportunities and the Royals' inability to maintain momentum ultimately defined the outcome of this contest.

Odds

BookSpreadTotalMoneyline
DraftKingsBOS -111 9 o -113 / u -106 Boston Red Sox -111 · Kansas City Royals -108

What these prices pay on $100 · What these numbers mean

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
  • Ceddanne RafaelaDay-To-DayQuadricepsBoston Red Sox
  • Adley RutschmanDay-To-DayElbowBoston Red Sox
  • Johan Oviedo60-Day-ILElbowBoston Red Sox
  • Kutter Crawford60-Day-ILForearmBoston Red Sox
  • Zack Kelly60-Day-ILElbowBoston Red Sox

Recent form

Kansas City Royals

Last 10: 3-7Streak W13.6 scored · 4.4 allowed per game2-3 at home

  • W2-0at St. Louis CardinalsMay 17
  • L4-5at St. Louis CardinalsMay 16
  • L2-6at Chicago White SoxMay 14
  • L5-6at Chicago White SoxMay 13
  • L5-6at Chicago White SoxMay 12
  • L3-6vs Detroit TigersMay 10
  • W5-1vs Detroit TigersMay 9
  • W4-3vs Detroit TigersMay 8
  • L5-8vs Cleveland GuardiansMay 7
  • L1-3vs Cleveland GuardiansMay 6

Boston Red Sox

Last 10: 3-6-1Streak L11.8 scored · 3.1 allowed per game1-2 away

  • L1-8at Atlanta BravesMay 17
  • W3-2at Atlanta BravesMay 16
  • L2-3at Atlanta BravesMay 15
  • L1-3vs Philadelphia PhilliesMay 14
  • W3-1vs Philadelphia PhilliesMay 13
  • L1-2vs Philadelphia PhilliesMay 12
  • L1-4vs Tampa Bay RaysMay 10
  • D0-0vs Tampa Bay RaysMay 9
  • W2-0vs Tampa Bay RaysMay 8
  • L4-8vs Tampa Bay RaysMay 7

Standings

TeamGames behindLostStreakWin %Won
Tampa Bay-56L1.59783
New York3.560W2.57180
Boston8.565L2.53675
Toronto14.571W1.49369
Baltimore14.571L2.49369
Chicago-66L1.52573
Cleveland369L1.50470
Minnesota6.573L1.47967
Detroit975W1.46064
Kansas City11.578L3.44362

How the scoring went

  1. 6th Inning2-0Contreras homered to left center (435 feet), Gasper scored.
  2. 7th Inning3-0Duran hit sacrifice fly to left, Wong scored.
  3. 7th Inning3-1Caglianone doubled to right, Jensen scored.

Win probability

Above the line favours Kansas City Royals, below favours Boston Red Sox.

Venue

  • Kauffman StadiumKansas City, Missouri
  • Attendance15531
  • OfficialsLaz Diaz, James Jean, Erich Bacchus, Malachi Moore

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