Last month when BYU Basketball lost to San Francisco in San Francisco, fans began to act like it was the end of the world. How could BYU, the school that has over 30,000 students and a roster full of 3- and 4-star talent lose to San Diego?!
Short answer: Home court advantage.
Long answer: The WCC in general is having an unbelievable, off the charts kind of season at home. Currently there are seven (well more than half the conference) teams that have lost twice or less at home. Even Portland, who is 7-16 this season, is 6-7 at home.