Monique Billings and Jordin Canada each scored 18 points to lead No. 8 UCLA to an 84-70 win over USC on Monday night.
Billings also had 11 rebounds for her 41st career double-double. It was the second time in four days UCLA beat USC.
UCLA (19-4, 10-2 Pac-12) moved into a three-way tie for first place in the Pac-12 with Oregon and Stanford. It was the Bruins' eighth consecutive win and they moved up one spot in the national rankings earlier in the day.
Aliyah Mazyck had a team-best 21 points for the Trojans (15-8, 5-7 Pac-12). Minyon Moore made one of two free throws to pull USC within 69-68 in the fourth quarter, but the Trojans wouldn't get any closer as the Bruins closed the game on a 15-2 run.
USC senior Kristen Simon played just three minutes in the first half and was on the bench in foul trouble, but finished with 12 points. She made a 3-pointer to beat the third-quarter buzzer to pull USC within five points at 61-56.
UCLA led 44-33 at halftime and outrebounded USC, 47-28.
UCLA: The Bruins did what they were supposed to do in beating the Trojans again and are riding the momentum into a stretch of playing three ranked opponents over their next four games.
USC: The Trojans can't let consecutive losses against one of the top teams in the country affect them since they play another ranked opponent in Arizona State this week.
UCLA: Hosts Arizona on Friday.