Markieff Morris is expected to have sports hernia surgery Friday and could miss at least the NBA preseason.

Morris recently received the diagnosis, according to a source, after spending parts of the summer working out in preparation for the upcoming season.

Morris began complaining late summer about deep discomfort as he exhibited symptoms of a sports hernia. 

Morris also had a sports hernia in 2010 before his junior season at Kansas, which was treated with surgery.