The NBA season may be long over, but the fierce competition of summer basketball is just starting to heat up. A new Nike Basketball campaign -- dubbed "Summer is Serious" -- will roll out a new video each day starting this week, each featuring the various personalities that make up summer basketball. The first clip stars Kevin Durant, who's selected by the Shirts during a draft ceremony at the Seat Pleasant Activity Center, the Maryland facility where Durant spent his childhood days. The campaign will culminate in the summer's ultimate pick-up game at the Tournament of Champions, in which two teams, selected by Durant and James Harden, will square off in New York City on August 15th. Athletes are encouraged to tweet @nikebasketball with #SUMMERISSERIOUS for a chance to be drafted by either team. Check out more videos below, and go here for more details on the campaign.