After his first college basketball season at the University of Virginia, Kyle Guy reviewed some video and was unhappy with what he perceived as a lack of performance on his part.

“I decided I was going to work really, really hard during that off-season to make things right,” said Mr. Guy, a 6-foot-3 guard from Indianapolis who averaged 7.5 points per game as a freshman.

“I never wanted to see video like that again,” he said.

Mr. Guy, who attended Lawrence Central High School in Indianapolis and was selected as Indiana’s “Mr. Basketball” long before he would help Virginia win the N.C.A.A. championship this past season, was not referring to a basketball video.

He was upset by an Instagram video that had been posted by Alexa Jenkins, his former girlfriend, which showed her enjoying the company of a new boyfriend.