There have been a few players to attempt to win three straight NBA All-Star Slam Dunk Contests but each has failed in the attempt.

Two-time reigning Slam Dunk Contest winner Mac McClung is favored to win the event on Saturday at All-Star Weekend.

Mac McClung has gone two-for-two in his Slam Dunk contest appearances, cementing himself as one of the best performers in the NBA All-Star weekend's premier event. He will attempt to join Nate Robinson as the only three-time dunk winner on Saturday.

McClung has stolen the show at the dunk contest in each of the last two years, but his success on All-Star weekend hasn't resulted in a real opportunity on an NBA roster. Since wi