Ex-Football Star Takes Stand in Murder Trial

Over two days of tearful testimony, Kenan Gay said he did not mean to push Robert Kingston out of the bar.
3:07 | 06/11/14

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Transcript for Ex-Football Star Takes Stand in Murder Trial
First, the trial of the former college football player, accused of dragging a man out of a bar and throwing him in front of a moving car. Kenny gay took the stand on Tuesday. Broke down as he delivered emotional testimony. Mara schiavocampo tracking the case. Reporter: The former college football player, turned defendant, taking the stand during his own trial. Kenan gay, telling jurors he never wanted to find another man. And was trying to protect his girlfriend in an overly aggressive drunk. He's nervous. He's a 25-year-old kid who is on trial for second-degree murder. Reporter: Over two days of tearful testimony, gay who has pleaded not guilty, said he didn't mean to push, 38-year-old Robert Kingston out of the bar, where he fell into the street and was fatally hit by a car. I just ran over somebody. Reporter: When it looks like Kingston was going to force a kiss on gay's girlfriend, now his wife, gay said, quote, I just wanted to get him away from her. Gay claims moments before the fight, he heard Kingston say, watch this, before approaching Elizabeth gay. And gay said, quote, that's when I took off. For four hours Tuesday, gay also narrated surveillance video, inside the tavern, explaining the split-second decision that ended Kingston's life. He pushed him out of the door, quote, because it was there. And demonstrating the shove on a sheriff's deputy. He took both hands, on the back of Mr. Kingston, and got him outside of the bar. And he says he released Kingston. And then, immediately turned back. Reporter: After gay's testimony, jurors left the courtroom and went to ed's tavern. I spoke with Mr. Gay's attorney this morning. And he told me he hoped that the jury would be able to visit the bar. I think he wanted them to see for themselves what it really looks like. Reporter: A visit to the scene of the crime, after one man's emotional account of it. For "Good morning America," Mara schiavocampo, ABC news, New York. And ABC's chief legal affairs anchor, Dan Abrams, joins us now. A long time on the stand. Did he help himself? Pretty well. There were inconsistencies of his account. He doesn't need to demonstrate he was telling the truth. All he needs to do is convince them maybe he's telling the truth. Or it could be that he's telling the truth because that would be reasonable doubt. That's why the site visit to the bar was so critical. Often, need to go to the crime scene. This is one of the cases where you do need to go to the scene. Why? You need to be able to see that 41-square-foot area of concrete. To answer the question, is his story plausible? Is it possible that he was just pushing him out. And then, he released him and he kind of stumbled into the street, as opposed to literally carrying him into -- That's all he needs to do. To make the story plausible. That's right. Possible. Possible. That's all he needs here. Remember, he has his wife backing him up. Other witnesses, offering different testimony. Conflicting testimony, if the jurors are confused, that's not guilty. Thanks very much. Now, to the latest on those

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

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