There is not one shred of evidence Zimmerman was defending himself

[Crepuscular]

16. They are evidence

that there was a physical confrontation and they provide the defense with the basis for the claim that Zimmerman was acting in self defense. Had Zimmerman suffered no injuries, the claim would have been much harder for the defense to support. But witness's have said that the two were fighting and at least one has place Martin on top. The injuries are consistent with Zimmermans story that Martin was beating the crap out of him and it's going to be very, very difficult for the jury to ignore that claim, bases on the evidence. In order for that to happen, the prosecutor would have to come up with some other plausible explanation for how the wounds occurred and to this point, there has been nothing offered in evidence that would do so. Absent any other explanation, the jury is going to look at those injuries as proof that Zimmerman was facing a physical threat.