Gresham was Oklahoma’s top returning receiver with 66 catches for 950 yards and 14 touchdowns last season. He needed only five more TDs to tie the school’s career record of 31 set by Mark Clayton. Now, he’s another key cog missing from what was the highest-scoring offense in college football history last year. "He’s such a main target, presence on the field and quality player that it changes," Stoops said. "It changes everything, your run-blocking along with your protection, along with him out in routes and, in particular, red zone stuff. You just have to work through it."