The Bruins limited the Sun Devils to 18 field goals and maintained a one-game lead over Stanford in the race for the Pac-10 regular-season championship.
Arizona State (17-10, 7-8) was led by Rihards Kuksiks with 11 points.
Midway through the first half the teams had scored only nine points apiece, but the Bruins outscored Arizona State by 11 during the remainder of the period and were not threatened in the second half.
Scarlett Johansson steps out with fiance after pregnancy reveal
Senate Democrats to pull all-nighter on climate change