The seventh-ranked Gators announced Graham's decision Sunday, two days after the third-year sophomore played just three minutes in the season opener.
Coach Billy Donovan says Graham's ''heart wasn't in it.'' Graham says he is ''moving on to the next chapter in my life and my basketball career'' and will ''always have positive memories from my years with the Gators.''
Graham played in 25 games, finishing with 11 points, five assists and four rebounds.
His departure leaves the Gators with seven scholarship players available Monday against Miami. Forwards Chris Walker and Alex Murphy won't play. Murphy is suspended for two games, and Murphy must sit out the first 10 games because of NCAA transfers rules.