This could mean a lot of different things. It could mean they don’t need it to prove their case. It could mean they have decided they don’t have enough evidence to prove their case. It could mean they got Roethlisberger’s DNA some other way so they don’t have to ask him for it.
At this point we are all playing a waiting game to see if he will be charged or not. As more details come out about why they withdrew the request I wouldn’t jump to any conclusions.
It could mean something significant or it might not mean anything at all.
We just have to wait and see.
ESPN to their credit was the first to report this.