Red Sox vs Royals Prediction, Odds, Moneyline, Spread & Over/Under for May 18

Odds updated as of 6:12 p.m.

The Monday slate in MLB includes a matchup between the Boston Red Sox and the Kansas City Royals.

Before you do any MLB betting on this matchup at FanDuel Sportsbook, here's everything you need to know.

Red Sox vs Royals Game Info

• Boston Red Sox (19-27) vs. Kansas City Royals (20-27)
• Date: Monday, May 18, 2026
• Time: 7:10 p.m. ET
• Venue: Kauffman Stadium -- Kansas City, Missouri
• Coverage: Royals.TV and NESN

Red Sox vs Royals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: BOS: (-112) | KC: (-104)
• Spread: BOS: -1.5 (+150) | KC: +1.5 (-182)
• Total: 9 -- Over: (-115) | Under: (-105)

Red Sox vs Royals Probable Starting Pitchers

Probable Pitchers: Sonny Gray (Red Sox) - 4-1, 3.18 ERA vs Seth Lugo (Royals) - 1-3, 3.76 ERA

The Red Sox will look to Sonny Gray (4-1) against the Royals and Seth Lugo (1-3). Gray and his team have a record of 5-2-0 against the spread when he starts. Gray's team is 4-2 this season when he starts and they are the moneyline favorite. The Royals have a 5-4-0 ATS record in Lugo's nine starts with a set spread. The Royals have a 2-2 record in Lugo's four starts this season when they were the underdog on the moneyline.

Red Sox vs Royals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Red Sox win (53.3%)

Red Sox vs Royals Moneyline

• Kansas City is a -104 underdog on the moneyline, while Boston is a -112 favorite on the road.

Red Sox vs Royals Spread

• The Royals are hosting the Red Sox, and are +1.5 on the runline. The Royals are +150 to cover the spread, and the Red Sox are -182.

Red Sox vs Royals Over/Under

• A total of 9 runs has been set for the Red Sox-Royals contest on May 18, with the over available at -115 and the under at -105.

Bet on Boston Red Sox vs. Kansas City Royals on FanDuel today!

Red Sox vs Royals Betting Trends

• The Red Sox have been chosen as favorites in 29 games this year and have walked away with the win 13 times (44.8%) in those games.
• Boston has a record of 13-16 in contests when sportsbooks favor them by -112 or more on the moneyline.
• The Red Sox and their opponents have hit the over in 20 of their 46 games with a total set by oddsmakers this season.
• In 46 games with a line this season, the Red Sox have a mark of 18-28-0 against the spread.
• The Royals have won eight of the 20 games they were the underdog on the moneyline this season (40%).
• Kansas City has an 8-11 record (winning 42.1% of its games) when it has played as a moneyline underdog of -104 or longer.
• In the 44 games bookmakers have set an over/under for the Royals, they have combined with opponents to go over the total 20 times (20-24-0).
• The Royals have collected a 19-25-0 record ATS this season (covering 43.2% of the time).

Red Sox Player Leaders

• Wilyer Abreu leads Boston OPS (.831) this season. He has a .300 batting average, an on-base percentage of .372, and a slugging percentage of .459.
• Among qualified hitters in the majors, his batting average ranks 19th, his on-base percentage ranks 32nd, and he is 47th in slugging.
• Willson Contreras leads Boston in total hits (39) this season while batting .253 with 15 extra-base hits. He's slugging .468 with an on-base percentage of .362.
• Among all qualifying players, he ranks 84th in batting average, 44th in on-base percentage and 42nd in slugging percentage.
• Contreras has picked up at least one hit in two straight games. During his last five outings he is batting .211 with two doubles, a home run and two RBIs.
• Ceddanne Rafaela is batting .284 with a .432 slugging percentage and 19 RBI this year.
• Rafaela has picked up a hit in three games in a row. During his last five outings he is batting .357 with two doubles, a home run, two walks and two RBIs.
• Jarren Duran has been key for Boston with 30 hits, an OBP of .243 plus a slugging percentage of .305.
• Duran takes a two-game hitting streak into this game. During his last five outings he is hitting .143 with two doubles and a walk.

Royals Player Leaders

• Bobby Witt Jr. has a team-best OBP (.376) and slugging percentage (.492), and paces the Royals in hits (56, while batting .303).
• Including all the qualified hitters in MLB, his batting average ranks 11th, his on-base percentage is 24th, and he is 30th in slugging.
• Maikel Garcia is hitting .263 with 13 doubles, a triple, three home runs and 19 walks. He's slugging .397 with an on-base percentage of .330.
• Including all qualified hitters, his batting average puts him 62nd, his on-base percentage ranks 89th, and he is 91st in slugging.
• Vinnie Pasquantino is hitting .202 with four doubles, two triples, five home runs and 20 walks.
• Salvador Perez is batting .205 with five doubles, seven home runs and seven walks.

Sign up for FanDuel Sportsbook and FanDuel Daily Fantasy today!