The American League has the two winningest teams in baseball squaring off against each other in the league's championship series.
The Boston Red Sox won 108 games and the American League East title before defeating the New York Yankees in four games in the Division Series. The Houston Astros won 103 games in winning the AL West, and the defending World Series champions swept the Cleveland Indians in the first round of the playoffs.
The Red Sox are playing to win the American League and get into the World Series, but they are also playing with a bit of revenge in mind.