Lack of detailed NIL rules challenges NCAA enforcement

A Lafayette basketball player shoots a jump shot on the NCAA floor logo during practice for an NCAA college basketball second round game in Pittsburgh Wednesday, March 18, 2015. (AP Photo/Keith Srakocic)As the market for college athlete to earn money off their names, images and likenesses rapidly evolves, NCAA enforcement is faced with the tricky task of trying to police activities currently unregulated by detailed, uniform rules.

NCAA Vice President of Enforcement Jon Duncan told the Associated Press that letters of inquiry have gone out to multiple schools over the last few months. He declined to identify the schools but said the letters are not indicative of a formal investigation and…