Penn State (10-19, 2-15 Big Ten), last in the 12-team conference, scored the game's first 12 points, withstood a Northwestern surge, then pulled away in the second half. The Nittany Lions' only other conference win was at home against No. 7 Michigan on Feb. 27.
Northwestern (13-17, 4-13) has lost seven in a row.
Northwestern's Alex Marcotullio, who scored a career-high 22 points, put the Wildcats ahead 54-53 with a 3-pointer with 6:13 to play. But Penn State scored the next six points, beginning with Sasa Borovnjak's short jumper, and scored 13 of the game's last 18 points. Borovnjak had 15 points and 10 rebounds.
Reggie Hearn, who scored 11 points before fouling out with 3:07 to play, was the only other Northwestern player in double figures.
Andy Katz breaks down the likelihood of Villanova, Syracuse, North Carolina or Oklahoma making a run to the Final Four next season.
Florida State has announced that Xavier Rathan-Mayes will return to the court for his junior season. The 6-foot-4 guard declared for the NBA draft last month but did not hire an agent.
Virginia coach Tony Bennett takes the ACC Fast Break with Dino Gaudio by answering questions like who the best Tony Bennett is and what other sport he'd like to coach.