The 2018 Boston Red Sox season was the 118th season in the team's history, and their 107th season at Fenway Park. Under first year manager Alex Cora, the team finished with a 108–54 record, winning the American League East division title for the third consecutive season, and finished eight games ahead of the second-place New York Yankees. The Red Sox were the first MLB team to post 100 wins during the 2018 season, reaching that milestone for the first time since 1946; they were also the first team to clinch a berth in the 2018 postseason.

Jose Alexander Cora is a Puerto Rican baseball manager and former infielder who is the manager of the Boston Red Sox in Major League Baseball (MLB). He previously played in MLB for 14 seasons with the Red Sox, Los Angeles Dodgers, Cleveland Indians, New York Mets, Texas Rangers, and Washington Nationals. After retiring as a player, Cora served as the bench coach for the Houston Astros when they won their first World Series title in 2017. Cora was named Boston's manager the following season, winning a franchise-best 108 games and leading the team to victory in the 2018 World Series. He is the fifth MLB manager to win the World Series in his first season and the first Puerto Rican manager of a World Series-winning team.