From UCLA:

UCLA Sophomore forward Reeves Nelson has a strained right hip flexor and has missed today’s practice. He is listed as day-to-day. The Bruins are off on Sunday and practice on Monday from 3-6 p.m., before returning to the court for their final tune-up against Cal State Los Angeles on Tuesday, Nov. 9. UCLA opens the 2010-11 season with Cal State Northridge on Nov. 12.