Brandon Knight missed his first seven shots and found himself on the bench in the final minute against Princeton. His confidence could have been shaken. His ego could have been bruised. After all, he was a freshman playing in his first NCAA Tournament game. Held scoreless for more than 39 minutes, Knight made a driving layup with two seconds remaining to lift No. 4 seed Kentucky (26-8) to a 59-57 win over 13th-seeded Princeton on Thursday. “I have all the faith and confidence in the world in him,” Wildcats coach John Calipari said.