EVANSTON—Terran Petteway scored 17 points, and Nebraska overcame a slow start to beat Northwestern 53-49 on Saturday.Walter Pitchford added 15 points, nailing three 3-pointers, and the Cornhuskers (12-10, 4-6 Big Ten) picked themselves up after getting blown out by Michigan earlier in the week.They trailed by six after an ugly first half and blew an eight-point lead late in the second but managed to pull this one out.Northwestern (12-12, 5-6) had just scored eight straight to tie it at 44 when Pitchford hit two free throws and a 3 to make it a five-point game with 2:25 left.Then, after two free throws by the Wildcats’ JerShon Cobb, Petteway nailed a 3 with 22 seconds left to make it a six-point game. Northwestern’s Sanjay Lumpkin answered with one of his own, but the Cornhuskers hung on.