SANTA CLARA, Calif. – While there's no doubt the San Francisco 49ers are losing a fine young player with nose tackle Ian Williams out for the season with a broken ankle, the flip side of the coin is the opportunity Glenn Dorsey is getting.This just might be Dorsey's best NFL chance for success. Dorsey -- whom the Kansas City Chiefs made the No. 5 overall pick out of LSU in the 2008 draft -- drew comparisons to Warren Sapp. Many NFL personnel folks thought Dorsey was a can't-miss player and the best player on the draft board.