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The men's lacrosse team upset Princeton for the second time this season and reached the national semifinals for the second time in three years with a 6-4 win over the Tigers in Hempstead, N.Y., on Saturday. Senior midfielder Max Seibald was held without a point for the first time since April 22, 2006, a 4-3 win over the Tigers. Freshman attackman Rob Pannell notched three assists and senior midfielder Rocco Romero led the team in scoring with two goals.Foxboro-bound: Members of the men's lacrosse team celebrate after defeating Princeton 6-4 in the quarterfinals of the NCAA men's lacrosse tournament.