Raiders signed Louisville RB Michael Dyer.
Dyer (5'9/218) entered college as a five-star recruit and emerged as a starter for national-champion Auburn as a true freshman. His career spiraled oddly and wildly from there, bouncing around several colleges before finally landing at Louisville, where Dyer managed a 110-481-5 rushing line as a senior, splitting carries with Brandon Radcliff and Dominique Brown. Dyer had a pedestrian Combine, running 4.58 with a 34-inch vertical and 10-foot broad jump. Turning 25 in October, Dyer is an overaged, mercurial prospect who looked ordinary in 2014. His commitment to and passion for the game are obvious question marks.