Devon Alexander has good skills, but I question his heart and if he really wants to win sometimes. I think once Amir starts to let his hands go, Alexander is going to start wondering what he is doing there and start to give up. He might manage to hurt Khan (who doesn't), but Khan knows how to see it through to the end and unless the hurtful punch comes early, then I think he will. I predict a wide Khan points win, maybe a stoppage if Alexander starts to give up.