Eyewitnesses saw Martin straddling and beating Zimmerman.<quoted text>
So you're changing your story?
Before you were absolutely certain there was an eyewitness to the "fact" that Martin threw the first punch.
You're just not a reliable witness.
I ask that the jury disregard all of your testimony.
The prosecution's star witness who was on the phone with Martin said she believed Martin threw the first punch.
Some people can multitask and post two different events at different times.