Bagger Lance is based on Ben Stiller's character White Goodman in "Dodgeball: A True Underdog's Story", released in 2004. They both have the same style of uniform, same haircut and same tone of voice. Lance's entrance is similar to Ben Stiller's in the film. Also, the way Lance lets Earl and Joel compete together even though he has technically won already is similar to what Stiller's character does in the movie.
Bagger Lance's name is a reference to the 2000 golf movie The Legend of Bagger Vance starring Will Smith and Matt Damon.