Yoon indicated that Muhammad was scheduled to undergo an MRI exam Wednesday evening.
This is the second injury that the 6'6", 225 lbs wing has sustained since arriving on campus earlier this summer. He suffered a serious high ankle sprain while playing a pick-up game in July.
On top of having assorted physical challenges, Muhammad has not been cleared to play while the NCAA investigates his eligibility.
The Bruins haven't even gotten to their first game of the 2012-13 season against Indiana State on November 9 and they have already experienced a season's worth of challenges.
Johsua Casey of rantsports.com hit the nail on the head when he stated that " injuries were piling up for UCLA."
Besides Muhammad, David Wear has gone down with a sprained ankle and Tyler Lamb has had arthroscopic knee surgery.