Purdue coach Matt Painter has his Boilermakers rekindling welcome memories.

They're playing lockdown defense. They're beating opponents to loose balls. And, yes, they're even beating ranked teams with regularity.

Rapheal Davis scored 20 points Wednesday, and a stout defense rescued Purdue from its own free-throw shooting woes to barely hold on for a 60-58 victory over No. 20 Ohio State in West Lafayette, Ind.

"I think we have really grown up," Davis said. "Beating three Top 25 teams is really good, but we can get better in a lot of areas."

A four-game winning streak has the Boilermakers (15-8, 7-3 Big Ten) off to their best conference start since going 9-1 in 2007-08. They beat the Buckeyes (17-6, 6-4) for the first time in nearly four years, ending a six-game skid.

A.J. Hammons finished with 11 points, seven rebounds and seven blocks for Purdue.

Purdue has won three consecutive over ranked opponents for the first time since January-February 2010. All three of those wins have come with the Boilermakers unranked, a feat they last achieved during a January-February stretch in 1979.

D'Angelo Russell had 20 points, seven rebounds and five assists for Ohio State.

No. 17 Maryland 64, Penn State 58: Dez Wells scored 23 points and Jon Graham scored 12 of his career-high 16 after halftime as the Terrapins (19-4, 7-3) edged the Nittany Lions (14-9, 2-8) to avert their first losing streak of the season.

The Terrapins were tied with 4:59 left and barely got past a 12th-place team seeking its first league win on the road.

Graham, a 6-foot-8 senior, played two seasons at Penn State before transferring. He went 6-for-7 from the floor and surpassed his previous career high by six points. He came in averaging a meager 2.3 points per game.

"It was a fun night," he said. "I'm just happy we won."

D.J. Newbill scored 18 for Penn State. The Nittany Lions are 0-6 on the road in the Big Ten, with five of those defeats by six points or fewer.

Buckeyes starter suspended

Ohio State forward Marc Loving, the top three-point shooter in the Big Ten, was suspended indefinitely by the school.

Coach Thad Matta didn't elaborate on the reason for the suspension, explaining only that Loving would have to earn his way back onto the team.

Loving, a 6-7 sophomore from Toledo, Ohio, is second on the team in scoring at 11.7 points per game and fourth in rebounds at 3.9 per game. He had started 19 of the first 22 games.