"I think Keenan has improved remarkably over the past year. I don't coach receivers, but I see him catching the ball over the middle, I see his toughness blocking, I see all those skills that have gotten better on a daily basis," Rosburg said. "From a special teams aspect, he's catching the ball so much better as a returner. That is really going to be the difference for Keenan, who wasn't a returner when he got here. Can he prove over time that you can learn how to do it?"