Consent isn't the issue for now- the players claim they did have sex with her period. If any of their semen is found to be inside the woman, their creditability is shot completely. If the semen doesn't match, it will be very difficult to make a case for rape, and depending on the what the photos actually show, difficult to make a case for assault and larceny as well.
Now that the evidence indicates none of the team members' DNA was found on (or in) the stripper, was there ANY OTHER DNA evidence found in or on her?
She may have had relations with someone else later. This is always brought up as in the recent ba$ketball case in Denver. Strangely absent in this case.