Christopher Barth, Associated Press
North Carolina's Tyler Hansbrough tries to get to the hoop past Rutgers' Hamady N'diaye during the Tar Heels' victory on Sunday.

PISCATAWAY, N.J. — Ty Lawson scored a career-high 26 points and Tyler Hansbrough had 20 points and 11 rebounds before leaving when he hit his head and No. 1 North Carolina beat Rutgers 93-71 on Sunday night.

The Tar Heels (9-0) are off to their best start since 1997-98 when they won their first 17 games on the way to the Final Four.

Hansbrough, the preseason national player of the year, tried to take a charge from Earl Pettis with 5:47 to play and the Tar Heels leading by 23 points.

Hansbrough went to the floor in a sitting position and then hit the back of his head against the bottom of the basket support. He stayed down on the floor for a couple of minutes before being helped up by coach Roy Williams and the trainer. Williams said Hansbrough had a mild concussion and a welt on the side of his head.

Freshman Corey Chandler had 23 points for the Scarlet Knights (7-4).

NO. 21 ARIZONA 69, FRESNO ST. 50: At Tucson, Ariz., Jerryd Bayless scored 21 points for Arizona in its fourth straight victory and second since coach Lute Olson announced he would extend his personal leave of absence through the end of the season.

Chase Budinger added 16 points, and Jordan Hill finished with 15 points and nine rebounds for the Wildcats (7-2). Kevin Bell had 12 points for the Bulldogs (5-5).

NO. 14 TEXAS A&M 64, ARK.-PINE BLUFF 37: At, College Station, Texas, Josh Carter scored 16 points and Texas A&M used stifling defense to improve to 7-0 at home and 9-1 overall.

The Aggies held Arkansas-Pine Bluff (4-6) scoreless for nearly 10 minutes to start the game, and the Golden Lions went without a basket for an 8 1/2-minute span in the second half. Marcelle Goins led Pine Bluff with 14 points.