Contrary to what some in the media have tried to portray this offseason, this is still a very talented Duke football team, even without Darian Mensah. Diaz still needs to figure out a few key position battles in fall camp as preparations for the season continue to ramp up. 3 key position battles for Manny Diaz and Duke in fall camp3. The Blue Devils added Penn's Jared Richardson and Charlotte's Javen Nicholas in the Transfer Portal, and that duo should be more than capable of making up for what the Blue Devils lost. SecondaryIt's impossible to even narrow this down because Diaz recently said that the entire secondary was up for grabs in fall camp.