From UCLA:

“Sophomore reserve center J’mison Morgan sustained a partially torn (second degree strain) quadriceps in his right leg yesterday (Jan. 12, 2010) in practice. He is slated to be out for 2-3 weeks and will miss the Bruins three-game homestand, which begins this Saturday (Jan. 16, 2010) with USC. Tip-off is slated for 4:37 p.m. in Pauley Pavilion.”