On Tuesday, a medical examiner who reviewed video and photographs of Zimmerman's injuries suffered during his fatal confrontation with Martin called Zimmerman's wounds "insignificant" and "non-life threatening."
Dr. Valerie Rao testified that Zimmerman was struck as few as three times by Martin during the fight. She also asserted his head may have only been slammed on the concrete a single time. Zimmerman said Martin repeatedly slammed his head on the concrete.
"Are the injuries on the back of the defendant's head consistent with one strike against a concrete surface?" asked prosecutor John Guy yesterday.
"Yes," Rao said.
Rao's testimony could contradict Zimmerman's assertion that he was involved in a potentially life-threatening struggle with the Florida teenager.
Zimmerman claims he shot Martin in self defense as Martin repeatedly banged his head against the pavement and reached for Zimmerman's gun.