TUCSON, Ariz. — Nick Johnson scored 20 points, Rondae Hollis-Jefferson added 14 and top-ranked Arizona rolled over Northern Arizona 77-44 Monday night to complete its second straight undefeated nonconference season.

Arizona (13-0) played its second straight game without injured center Kaleb Tarczewski, but didn't really need him, grabbing control with a 27-4 first-half run.

The Wildcats dominated the small-program Lumberjacks defensively, holding them to 36 percent shooting.

HONOLULU — Georges Niang scored 15 of his 22 points in the second half and Iowa State beat Akron to match the best start in school history.Melvin Ejim had 21 points and 12 rebounds for the Cyclones, who improved to 10-0.