After a slow start, the No. 2 Cornell men’s lacrosse team scored nine straight goals, including five from Clarke Petterson, who finished with a career-high eight, as the Big Red upset No. 1 Towson, 18-11, at the Crown Lacrosse Classic in Charlotte, N.C., on Sunday. Petterson became just the 10th player in Cornell history to score at least eight goals in a game. John Piatelli had four goals and two assists, while Jeff Teat finished with four assists for the Big Red (4-1). In his first career start, freshman goalie Chayse Ierlan finished with 10 saves. The Tigers (5-1) held the edge in shots (44-32), faceoffs (26-for-32) and ground balls (46-33), but Cornell forced them to go just 9-for-16 on clears. Luke Fromert led Towson with two goals and two assists, with both goals coming in the first six minutes as the Tigers built a 4-1 lead. The teams traded goals to get to 5-2 before Petterson’s second goal with 1:02 remaining in the opening quarter sparked the Big Red’s 9-0 run.