TV scheduled it. Source: J. McCauley, AP
All of the Pac12 teams are playing back to back "rival" games, ie. USC v UCLA; UA v ASU, OU v OSU, etc.
They did this because they no longer play the Pac 12 tournament the same time as the men. To do this they moved the women's tournament up a week. Thus had to take a week away from the Conference schedule. So instead of playing your rival, as the only game on the schedule, at home in one week then about 5-6 weeks later playing them again at the others venue, they made the schedule this way.
They also moved the Pac 12 WBB Tournament out of LA and to Seattle for the next few years.
Should be some ok games again out west next week as UCLA will play both Stanford and Cal this week, along with USC, at the No Cal schools. I think the games are Thur, USC @ Cal @ 6pm PST and then UCLA plays at Stanford on Friday night. Those games on the Pac12 network.