Brutal Fight Between George Zimmerman and Trayvon Martin

The case gets ready to go to the jury as the defense tries to prove Zimmerman acted in self defense.
3:24 | 07/09/13

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Transcript for Brutal Fight Between George Zimmerman and Trayvon Martin
Now we take you into that florida courtroom, george zimmerman on trial for the murder of trayvon martin. The defense almost over, the case almost ready to head to the jury. Abc's matt gutman tells us about today's big moments in zimmerman's defense. Reporter: Jurors spend hours today listening to dr. Vincent demaio, dissecting images of zimmerman's bloodied head and face. I believe the ems thought he had a fractured nose. Reporter: The defense parading those blown up pictures for the six jurors to see. I think you have six Reporter: Still, after 11 days of testimony, the defense working to bolster zimmerman's claim of self defense, outlined in this police re-enactment. I shot him, and I didn't think I hit him because he sat up and said, "oh, you got me, you got it, you got me, you got it. Something like that. Reporter: And working to rescue his credibility -- earlier in the trial another medical examiner testified that martin couldn't have spoken after being shot. As zimmerman said he did. DeMAIO SAYS IT IS POSSIBLE. Even if I right now, reached across, put my hand through your chest, grabbed your heart and ripped it out, you could stand there and talk to me for ten to 15 seconds. Reporter: The last witness today, an african american neighbor testifying she heard zimmerman's voice in these 9/11 calls. Do you think he's yelling help? Yes. Based on the fact that I only heard george's voice and it's a white male voice, I would say that it was his. Reporter: We have been watching the six female jurors take notes for weeks now. Now that is tapering off. They have even started to decline breaks. Analysts tell us their apparent hurry to get throughh it means they have like lick made up their minds. Interesting. Thank you matt gutman. Let's bring in "nightline" anchor dan abrams. All these weeks almost over. Take us back to what you think was the turning point so far. The testimony of the neighbor and eye witness, john good. He had the best vantage point, the clearest testimony about exactly what happened during that alt occasion. Here was the key moment. The person who you now know to be trayvon martin was on top, correct? Correct. He was the one who was raining blows on the person on the bomb, george zimmerman, right? That's what it looked like. That was key because? No matter who started this incident, if george zimmerman was on the bottom and getting pummelled, he had argue self-defense and the prosecution has to disprove it beyond and reasonable doubt. You can make an argument that john good in conjunction with the injuries that george zimmerman had is right side. Do you think it's going to go the way of the defense? It's over? It's almost impossible to think how these jurors could follow the letter of the law, based on the evidence that's been presented, and convicted him either murder or manslaughter. Manslaughter included? Absolutely. Is there any lesser charge? It's possible that the judge will allow even lesser charges there and then we'll have to see what the juror would do. But that's to be determined. Almost over but going really well for the defense? Absolutely. Thanks, dan abrams. Now an emotional day in

This transcript has been automatically generated and may not be 100% accurate.

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