Arizona State coach Dirk Koetter abruptly changed his mind and decided to make sophomore Rudy Carpenter the Sun Devils' starting quarterback. Senior Sam Keller, named the starter Friday, was excused from the Sun Devils' practice Sunday night and is considering transferring to another school. "It's simple. I made a mistake on the quarterback situation and I'm changing my mind," Koetter said after Sunday's workout. "We're going to start Rudy Carpenter. I've excused Sam Keller from practice to consider his options."