http://www.cbssports.com/fantasy/footba ... -torn-pcl/
For the record, this is a trickier injury than RW's MCL- cruciate ligaments are a bit trickier to brace (I think), and they're required to take pressure on them in the normal range of movement (if my A&P isn't failing me, which is entirely possible).
He's got two weeks to heal, but this is much more one of the types of injuries that is more at risk of being further injured if he plays on it (which, along with it possibly being a more serious sprain, would explain why he's played virtually not at all on the injury).