Boogie Ellis scored 21 points, Reese Dixon-Waters and Kobe Johnson had 15 points each, and the Southern Cal Trojans beat the Colorado Buffaloes 84–65 in Boulder, Colo., on Thursday night. Drew Peterson added 11 points and Tre White finished with 10 for Southern Cal (20–8, 12–5 Pac-12 Conference). The Trojans have won three straight. KJ…