BATON ROUGE, La. — Theresa Plaisance scored 13 points, grabbed nine rebounds and blocked three shots, and LSU snapped a snapped a two-game skid with a 62-54 upset of No. 9 Georgia on Sunday. Plaisance, whose late-game failure at the foul line marred an otherwise dominant 20-point outing in a last-second loss to Tennessee on Thursday, came through in the clutch this time.