MANILA, Philippines -- National University got back at De La Salle University, 84-80, at the Smart Araneta Coliseum Sunday to boost its UAAP Season 89 men's basketball Final Four bid.  Reinhard Jumamoy poured 21 points, six assists, five rebounds, and four steals to lead the Bulldogs, who avenged their first-round defeat to the Green Archers to rise to 8-3 for second place behind the UP Fighting Maroons.  Paul Franciso drained a trey to give Bulldogs an 82-80 lead with 44 seconds left and PJ Palacielo eventually sealed it for NU with two free throws in the last four seconds.  Doy Dungo fired 19 points and four assists to pace the defending champ La Salle, which fell to 6-5 for fourth place.