Miz is from Cleveland, where LeBron grew up and was a hometown sports hero. In the NBA he was drafted by the Cleveland team (the Cavaliers) and brought them success that the franchise has never seen before. When his contract expired in 2010, he was going from team to team trying to find the place where he wanted to go. Eventually he got an ESPN 1-Hour Self-Indulgent Special where he made his decision in front of the world, that he was "taking his talents to South Beach" and joined the Miami Heat. Cleveland fans have been and still are extremely upset, the Heat have arguably the best team in the NBA, and Cleveland had the worst record in the league last year.
There's your backstory. KiaSport, you are brilliant.