The partnership kicks off with the Leagues Cup, a tournament that begins Tuesday and culminates in a final match on Aug. 31. It features 18 MLS clubs competing against 18 teams from Mexico's Liga MX. Walmart will invest in MLS and become an official sponsor and partner of the league. Terms and the exact length of the partnership weren't disclosed. "Walmart will be front and center for the highly anticipated tournament," said William White, Walmart's chief marketing officer. During the tournament and beyond, ...