The 2018 American League Wild Card Game was a play-in game during Major League Baseball's (MLB) 2018 postseason contested between the American League's (AL) two wild card teams, the New York Yankees and the Oakland Athletics. The game took place at Yankee Stadium on October 3, starting at 8:08 pm EDT. The Yankees won, 7–2, and advanced to face the Boston Red Sox in the American League Division Series.

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.