Memphis, Tenn. ? Memphis coach John Calipari was a bit perplexed about the way his No. 19 Tigers lost concentration with a big lead.

Chris Douglas-Roberts scored a career-high 28 points on 10-of-12 shooting to lead Memphis to an 88-63 victory over Austin Peay on Thursday night.

“I saw some great signs,” Calipari said. “The biggest thing is real unselfish play. I thought defensively, we were pretty good. But, again, at the end of the game, I’d like to strangle a couple of guys.”

Douglas-Roberts, a sophomore guard, also was 8-of-10 from the line and had five assists for Memphis (8-2). The Tigers shot 62 percent from the field.

Doneal Mack, Jeremy Hunt and Kareem Cooper added 11 points each, and Joey Dorsey finished with 11 rebounds. Cooper hit all five of his shots.

“Basically, right now, we’re competing, being aggressive, being gritty, just being mean and just being like a beast,” Cooper said.

Derek Wright led Austin Peay (3-5) with 18 points, and Fernandez Lockett had 12. Landon Shipley, the Governors’ second-leading scorer at 12.1 points, started his first game of the season, but managed only six points.

Memphis scored the game’s first 10 points and built a 22-2 lead.