CORVALLIS, Ore. (AP) _ Adia Barnes scored 28 points to lead No. 7 Arizona to an 84-58 victory over turnover-plagued Oregon State on Saturday night.

Arizona (12-4, 6-2 Pac-10) used a 29-4 second-half run to break open a close game. Barnes had 17 points in that span, mostly on layups after Oregon State (6-11, 1-7) lost the ball under its own basket in the face of full-court pressure.

Barnes was 11-of-20 from the field and 6-of-8 from the free-throw line. She had 20 points in the second half, when Arizona outscored Oregon State 48-33.

Oregon State had a season-high 38 turnovers. Arizona had 22 steals, six by Monika Crank and five by Barnes, and scored 45 points off Oregon State turnovers.

Marte Alexander added 16 points and 10 rebounds for Arizona.

Tanesha Wade scored 12 points for Oregon State, which has lost nine of its last 10 games.

Oregon State pulled within 50-45 on a basket by Wade with 9:09 remaining, but didn't score again until Watts made a free throw with 4:23 left.