Duke and NCAA investigating possible violation

Duke and the NCAA are investigating whether an NCAA recruiting rule was violated when coach Mike Krzyzewski reportedly offered a scholarship to a recruit during a summer tournament.

The scholarship offer to five-star prospect Alex Poythress came on Tuesday night, after Poythress' AAU team was eliminated from the AAU Super Showcase in Orlando, Fla.

Poythress confirmed the offer to CBSSports.com on Thursday, and said he spoke to Krzyzewski when he received the offer.

cbssports.com