Is a basketball slang " catch phrase " for a matchup of 2 marquee players who are going to go at one another in a head to head duel.
Bill Russell and Wilt Chamberlain was a battle of 2 Dunkadelic Heavyweights that may be considered the biggest one on one rivalry of All-Time in the NBA. The 1988 All-Star Slam Dunk contest was a Dunkadelic Heavyweight showdown between Dominique Wilkens and Michael Jordan. Now that's Dunkadelic!!!!!