Williams stayed in-state, and quickly became a difference-maker for the Aggies, becoming the first true freshman in program history to run for over 1,000 yards. Williams broke out in a major way as a junior, earning first-team All-SEC and second-team Associated Press All-American honors by finishing in the top five nationally with 1,524 rushing yards and scoring 15 times on 252 carries (6.1 average).