Mitchell had "clean-up" knee surgery

49ers RB Elijah Mitchell had what he called a "clean-up" procedure on his knee this offseason. He added that he expects to be ready for the start of training camp. Mitchell missed 3 games in December with what was described as knee swelling -- although it's unclear if this surgery was related. We'll keep an eye on Mitchell this summer. He escaped free agency without the 'Niners adding backfield competition. We'll see what the draft brings.