[Updated at 10:25 a.m. ET]
O'Mara asked Good if he saw Martin slamming Zimmerman's head on the ground. Good said he did not see Zimmerman's head hitting the concrete.
[Updated at 10:22 a.m. ET]
Good said he thought the person on the bottom was yelling for help.
[Updated at 10:20 a.m. ET]
O'Mara asked Good to define "ground and pound."
"It's usually when someone is on top in a mounted position I believe. In the dominant position, but like I said, the person on the bottom is able to throw punches back, but I did not see any of that," said Good.
[Updated at 10:17 a.m. ET]
O'Mara asked Good if the person on top was in a mixed martial arts stance. Good said at first he thought it was what he calls a "ground and pound."
[Updated at 10:14 a.m. ET]
O'Mara got down on the ground and demonstrated how the person on top looked to Good.
[Updated at 10:11 a.m. ET]
Good is explaining to O'Mara how the two individuals were on the ground wrestling on the ground about 15 to 20 feet away from his town home.
[Updated at 10:08 a.m. ET]
O'Mara is starting at the beginning, asking Good about the first noise her heard that night.
[Updated at 10:06 a.m. ET]
Good said he heard someone yell "help, help." De La Rionda has finished his questions for Good. O'Mara has asked for a couple of minutes to review his exhibits.
[Updated at 10:04 a.m. ET]
De La Rionda showed Good a map of the neighborhood to show the jurors where Good saw the two people wrestling on the ground.
[Updated at 10:01 a.m. ET]
Good said he heard the gunshot after he went back inside. He heard the gunshot as he was dialing 911.
[Updated at 9:59 a.m. ET]
De La Rionda is showing Good pictures of his neighborhood to help orient the jurors to his point of view the night of the shooting.
[Updated at 9:54 a.m. ET]
Good said when he walked out of his town home, he could not see the hands of the person on the bottom. Prosecutor Bernie De La Rionda is about to play Good's 911 call from that night.