Sanford, FL -- George Zimmerman's attorney Mark O'Mara says he expects the defense to rest on Wednesday.
It also appears Zimmerman will not be testifying in his own defense as O'Mara suggested that Eloise Dilligard would be their last witness.
Zimmerman is charged with murder in the death of 17-year-old Trayvon Martin.
Dilligard, a former Zimmerman neighbor, testified remotely late Tuesday that she thinks it is the neighborhood watch volunteer screaming for help in the background of a 911 call made during last year's fatal altercation. However, the state pointed out during cross that Dilligard had never heard Martin's voice before.
Earlier on Tuesday, the defense called Dr. Vincent Di Maio, a forensic pathologist to the stand. Di Maio, a nationally-renowned gunshot wound expert testified that while the muzzle of the gun was touching Martin's clothes when it was fired, he said the gun was 2 to 4 inches from the teen's skin.
Di Maio explained the 23-ounce can of fruit juice Martin had just purchased at a nearby 7-Eleven was likely pulling the teen's hoodie away from his skin as he leaned over Zimmerman.
"That is, if you lean over somebody, you'll notice that the clothing tends to fall away from the chest, if instead you're laying on your back and somebody shots you, your clothing is going to be against your chest."
But the state pointed out Di Maio could not testify as to who started the fight or who threw the first punch.
Tuesday was the 11th day of testimony.
If convicted of second degree murder, Zimmerman could be sentenced to life in prison.