LEXINGTON, Ky. (AP) - Rajon Rondo hit a three-pointer with one-second left - his second buzzer-beating game-winner in three weeks, as Kentucky defeated South Carolina 80-to-78 today to snap a two-game home losing streak. With the victory, Kentucky (12-6, 2-2 Southeastern Conference) avoided losing its first three conference home games for the first time ever. Antoine Tisby's two free-throws gave South Carolina (10-8, 1-4) a 78-to-77 lead with 10 seconds left. Tisby went to the line amid vocal protests from Kentucky coach Tubby Smith and the Rupp Arena crowd, who argued Tisby traveled. Instead, the foul was called on center Randolph Morris - his fifth, which ousted him from the game. Joe Crawford led the Wildcats with 15 points, Bobby Perry had 13 and Morris added 12. Tarence Kinsey's 21 points led the Gamecocks. Kentucky made 56 percent of its shots from the field in the game, and South Carolina hit 52 percent. The Gamecocks won the rebounding battle, 31-to-25.