self-defense claim is on shaky grounds. so this evidence is extremely important. >> are you saying you can't tell based on those photos, the medical examiner examining from the photos, whether or not those were enough lacerations to explain being slammed multiple times? >> i think you can actually take a fall, bang your head against the sidewalk, and come down with this kind of hematoma situation. i think it -- certainly, the wounds appear to be super official but that doesn't mean there isn't some underlying trama more serious -- >> but if your head is slammed repeatedly on a sidewalk, wouldn't you have more lacerations as the medical examiner said? >> not necessarily. while your head is being slammed, you're trying to push up against it, i'm not convinced that -- that what she is saying, her observation negotiates what he -- what george zimmerman is claiming. >> i want to bring in mark and jeff. mark, from a defense standpoint, how do you think the prosecution did today?