Royals vs Red Sox Prediction, Odds, Moneyline, Spread & Over/Under for May 20

Odds updated as of 7:12 p.m.

In MLB action on Wednesday, the Kansas City Royals play the Boston Red Sox.

Here's everything you need to know before checking out today's MLB odds and spreads on FanDuel Sportsbook.

Royals vs Red Sox Game Info

• Kansas City Royals (20-29) vs. Boston Red Sox (21-27)
• Date: Wednesday, May 20, 2026
• Time: 7:40 p.m. ET
• Venue: Kauffman Stadium -- Kansas City, Missouri
• Coverage: Royals.TV and NESN

Royals vs Red Sox Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: KC: (-120) | BOS: (+102)
• Spread: KC: +1.5 (-196) | BOS: -1.5 (+162)
• Total: 7.5 -- Over: (-110) | Under: (-110)

Royals vs Red Sox Probable Starting Pitchers

Probable Pitchers: Michael Wacha (Royals) - 4-2, 2.83 ERA vs Connelly Early (Red Sox) - 3-2, 3.21 ERA

This contest's pitching matchup is set, as the Royals will send Michael Wacha (4-2) to the mound, while Connelly Early (3-2) will answer the bell for the Red Sox. Wacha's team is 4-5-0 against the spread in his starts this season. Wacha's team is 3-1 this season when he starts and they are the moneyline favorite. The Red Sox have gone 4-5-0 against the spread when Early starts. The Red Sox were the moneyline underdog for two Early starts this season -- they split the games.

Royals vs Red Sox Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Red Sox win (53.8%)

Royals vs Red Sox Moneyline

• Kansas City is a -120 favorite on the moneyline, while Boston is a +102 underdog on the road.

Royals vs Red Sox Spread

• The Red Sox are 1.5-run favorites against the spread for this matchup with the Royals. The Red Sox are +162 to cover, while the Royals are -196 to cover as a 1.5-run underdog on the runline.

Royals vs Red Sox Over/Under

• A total of 7.5 runs has been set for the Royals-Red Sox game on May 20, with the over available at -110 and the under at -110.

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

Royals vs Red Sox Betting Trends

• The Royals have been favorites in 23 games this season and have come away with the win 11 times (47.8%) in those contests.
• This year Kansas City has won eight of 19 games when listed as at least -120 on the moneyline.
• The Royals and their opponents have gone over in 21 of their 46 games with a total set by sportsbooks this season.
• The Royals have posted a record of 19-27-0 against the spread this season.
• The Red Sox have been the moneyline underdog 16 total times this season. They've finished 5-11 in those games.
• Boston is 4-10 (winning only 28.6% of its games) when it has played as a moneyline underdog of +102 or longer.
• In the 48 games bookmakers have set an over/under for the Red Sox, they have combined with opponents to go over the total 21 times (21-26-1).
• The Red Sox have covered 41.7% of their games this season, going 20-28-0 against the spread.

Royals Player Leaders

• Bobby Witt Jr. has 58 hits and an OBP of .372 to go with a slugging percentage of .482. All three of those stats rank first among Kansas City hitters this season. He has a .301 batting average, as well.
• Among all qualifying hitters, he ranks 13th in batting average, his on-base percentage ranks 27th, and he is 39th in slugging.
• Witt has recorded a base hit in two games in a row. In his last five games he is batting .250 with a double, a walk and an RBI.
• Maikel Garcia has 13 doubles, a triple, three home runs and 19 walks. He's batting .262 and slugging .390 with an on-base percentage of .327.
• He is 67th in batting average, 89th in on-base percentage and 99th in slugging among qualified hitters.
• Garcia takes a four-game streak with at least one hit into this contest. In his last five games he is batting .174 with a double.
• Vinnie Pasquantino has 34 hits this season and has a slash line of .194/.279/.326.
• Salvador Perez is batting .199 with a .249 OBP and 20 RBI for Kansas City this season.

Red Sox Player Leaders

• Wilyer Abreu has a .363 on-base percentage and a .444 slugging percentage, both team-high numbers for the Red Sox. He's batting .294.
• Including all the qualifying hitters in the big leagues, his batting average places him 19th, his on-base percentage ranks 38th, and he is 55th in slugging.
• Willson Contreras leads his team with 42 hits. He has a batting average of .258 while slugging .479 with an on-base percentage of .361.
• Including all qualified hitters, he is 76th in batting average, 42nd in on-base percentage and 40th in slugging percentage.
• Ceddanne Rafaela is batting .288 with seven doubles, two triples, four home runs and 10 walks.
• Jarren Duran is batting .189 with nine doubles, five home runs and 15 walks.

Royals vs Red Sox Head to Head

• 5/19/2026: 7-1 BOS (Favorite: Red Sox, Spread: -1.5, Total: 7.5, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 5/18/2026: 3-1 BOS (Favorite: Red Sox, Spread: -1.5, Total: 9, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 8/6/2025: 7-3 KC (Favorite: Red Sox, Spread: -1.5, Total: 8.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 8/5/2025: 6-2 BOS (Favorite: Red Sox, Spread: -1.5, Total: 7.5, Favorite Moneyline: -250, Underdog Moneyline: +205)
• 8/4/2025: 8-5 BOS (Favorite: Red Sox, Spread: -1.5, Total: 9.5, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 5/11/2025: 3-1 BOS (Favorite: Royals, Spread: -1.5, Total: 8.5, Favorite Moneyline: -134, Underdog Moneyline: +116)
• 5/10/2025: 10-1 BOS (Favorite: Royals, Spread: -1.5, Total: 7, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 5/9/2025: 2-1 KC (Favorite: Red Sox, Spread: -1.5, Total: 9, Favorite Moneyline: -110, Underdog Moneyline: -106)
• 8/7/2024: 8-4 KC (Favorite: Royals, Spread: -1.5, Total: 8.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 8/6/2024: 6-5 BOS (Favorite: Royals, Spread: -1.5, Total: 8.5, Favorite Moneyline: -130, Underdog Moneyline: +110)

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