	Kim defeated The Ultimate Fighter season 5 winner, Nate Diaz on January 1, 2011, at UFC 125 via unanimous decision. Kim used his judo to control rounds 1 and 2. Diaz mounted a remarkable offense in Round 3, but it was not enough and Kim won a decision over Diaz. After the fight Kim called out current UFC welterweight champion, Georges St-Pierre, whom he considers a hero and role model to himself as a mixed martial artist. Later on January 10, 2011, Kim signed a four fight extension with the UFC.