I wonder if the SANE report comes in or not? If the DA introduces the SANE report, then he opens the door to the DNA found on her.
If the DA does not mention the DNA found in her nor injuries, then the other man is not involved. If he mentions the DNA found in her or claims injuries, he has openned a door he may not wish to open.
what you say doesn't make sense. The defense would get it admitted in any trial.