Best dunkers from across the United States set to throw down.
The best amateur dunkers in America have been battling out for the honour to be called the best in a very deep talent pool.
The annual competition sees athletes in cities around the country show off their skills in the air in the hope of winning through to the final.
The NBA Slam Dunk competition has been criticised in recent years for its lack of flair and originality, but no body could accuse these men for holding back.
Sit back and check out these short videos of each city winner doing their thing.