The Blaugrana face a tricky test of their title credentials as they head to the Ramon Sanchez-Pizjuan Stadium.

Starting Sunday in Toronto, the No. 2 seed Seattle Mariners and No. 1 seed Toronto Blue Jays will clash with a trip to the World Series on the line. The next day, the defending champion Los Angeles Dodgers and top-seeded Milwaukee Brewers will begin their series on the National League side of the bracket.