Heat forward LeBron James is the NBA's MVP for a third time, putting him alongside some of the game's all-time greats.A source close to James confirmed to ESPN.com's Brian Windhorst that the Heat star won the award.A person familiar with the decision told The Associated Press that James will be announced Saturday as this year's winner of the league's top individual honor, and that he will be formally presented with the trophy by commissioner David Stern on Sunday afternoon before Miami hosts Indiana in Game 1 of an Eastern Conference semifinal series.The person spoke on condition of anonymity because the league has not announced the results. Source: ESPN