EVANSTON—Vincent Edwards scored 16 of his 25 points in the second half and Caleb Swanigan added 20 points and 14 rebounds to help No. 16 Purdue beat Northwestern 69-65 on Sunday.Purdue (25-6, 14-4 Big Ten) clinched the outright regular-season conference title earlier in the week, but had to hold on in the final seconds to fend off Northwestern (21-10, 10-8) in front of a raucous sellout crowd.Bryant McIntosh finished with 25 points and six assists for Northwestern. The Wildcats have lost six of nine.Swanigan had his nation-leading 25th double-double.NU Is expected to get an NCAA Tournament bid for the first time, but first plays in the Big Ten Tournament in Washington starting Thursday against Ohio State or Rutgers.