That statement isn't in the search warrant, fwiw.
http://www.thesmokinggun.com/archive/0329061duke1.html
I'm no expert, but that appears to be a specific search warrant for the premises - not the players themselves - in other words, not to take their DNA from them, but to search the premises for DNA.
But good digging.
My note was not from a formal document - so could be incorrect.