"Good took the stand today and said he first thought he was looking at a dog attack until he noticed two men. He says he yelled "stop" as he watched the fight.
"I said cut it out. I'm calling 911 because it was getting serious," said Good.
Good says he watched as what looked like punches being thrown.
"Could you describe who was on top and who was at bottom," asked prosecutor Bernie de la Rionda.
"The color on top was dark and the color at bottom was…red," responded Good referring to the men's clothing.
At another point he told the court that the person on the bottom had "lighter skin color."
Zimmerman is a white Hispanic who was wearing a red and black jacket that night. Martin, who was black, was wearing a dark sweatshirt.
He also said, "The person on the bottom, I could hear a 'Help.'"
Under cross examination by Zimmerman's lawyer, Good said he believes he saw Martin on top punching Zimmerman "MMA style," a reference to mixed martial arts.
"The person on top was ground and pounding the person on the bottom?"asked Zimmerman attorney Mark O'Mara
"Correct," said Good
But he said he did not see Martin banging Zimmerman's head on the concrete, which is what Zimmerman has claimed.
His testimony is in sharp contrast to Selma Mora, another witness to the fatal encounter between Zimmerman and Martin who testified late Thursday that Zimmerman was on top of Martin in the moments before a gunshot ended the fight.
"How were the two people positioned that you saw?" asked prosecutor John Guy.
Mora told the court Thursday that at some point she saw a man in "patterns between black and red" on top, indicating Zimmerman.
"One of them was on the ground, and the other one was on top in position like a rider," Mora, who speaks Spanish, testified through a translator."


http://gma.yahoo.com/george-zimmerman-witnesses-conflicting-versions-fatal-fight-145530258--abc-news-topstories.html



A responder at the scene said Martin's knuckles were bloodied, suggesting he had injured Zimmerman with a punch;
- The lead investigator on the scene, Officer Christopher Serino, wrote that Zimmerman could be heard "yelling for help as he was being battered by Trayvon Martin."