Peyton and Eli Manning doing offseason work at Duke Peyton and Eli Manning are working out at Duke with head coach David Cutcliffe, who coached both Mannings in college. ESPN's Chris Mortnesen talked to the Manning brothers about coach Cutcliffe. Here's what he had to say: The Mannings still enjoy being coached by Cutcliffe. Peyton told Cutcliffe to coach them just like they were freshmen in college. Eli says that Cutcliffe is helping him with his mechanics and keeping everything sharp. Both quarterbacks brought three receivers with them to Durham, but NFL draft hopeful Conner Vernon was also in attendance doing drills with the professional receivers.