Complex sentence: They defeated the Minnesota Twins 8--4 in the Wild Card Game and the Cleveland Indians in five games in the Division Series before losing to the Houston Astros in seven games in the 2017 American League Championship Series.
Split into simpler sentences: They defeated the Minnesota Twins 8-4 in the Wild Card Game and the Cleveland Indians in five games in the Division Series. They will face the Houston Astros in the 2017 American League Championship Series.