USC, the top-ranked team and the three-time defending National Champion, earned an at-large bid to the NCAA tournament after falling to UCLA in overtime of the championship game of the Mountain Pacific Sports Federation tournament on Sunday. UCLA won the MPSF tournament as the three-seed and is the second seed for the national tournament.
Western Water Polo Association champion UC San Diego is the third seed for the tournament and will meet UCLA in the second semifinal at 3 p.m., on Saturday. Princeton, which earned the Collegiate Water Polo Association's automatic berth is seeded fourth and will take on USC.
Princeton played USC in the quarterfinals of the 2009 NCAA tournament and fell 13-3. The Tigers then defeated Loyola Marymount for third place. Princeton lost at USC on Sept. 29 by a 13-4 score. The Tigers last faced UCLA in 2010 and UC San Diego in 2007.