ended his testimony. they buried him in the middle and they have many more witnesses to come forward and i suppose put this all into context and put all the pieces of the puzzle together. but there's no question about it, he was a great witness for the defense. >> how significant that you have this other witness who comes forward, the physician's assistant who says that on zimmerman's medical history, it says he was involved in mixed martial arts three times a week? >> well, i guess i would assume he's not very good at it, because trayvon martin was depicted by john good as being on top. so you could take the classes. it doesn't mean you're great. but let me point something out to you legally speaking. you could believe all of the witnesses testified so far, including rachel jeantel and still find zimmerman not guilty. here's why. based on what jeantel testified to, you would have to believe that zimmerman was the aggressor. but then john good shows at some point trayvon martin got the upper hand.