It's this simple - George Zimmerman was stalking Trayvon Martin

[Daalalou]

37. Trayvon didn't beat the crap out of Zimmerman

Nor did he pummel him. From the very beginning, what never made sense to me was Zimmerman's claim that he was badly beaten by Trayvon and had no choice but to shoot, but didn't go to a hospital that night.

As more evidence has come out, it's become clearer that a "beating" or "pummeling" never happened:

1) The only injury to Trayvon's hands was a single 1/4" abrasion on one finger. He also had none of Zimmerman's blood or DNA on his hands.
2) Zimmerman's head injuries, as his own doctor reported, were superficial and there was no head trauma.
3)His doctor said that his nose was likely broken, but it was a minor break, and no X-rays were taken.
4) The witness who said Trayvon was punching Zimmerman MMA style has recanted that testimony.

It sounds like, at most, that Trayvon hit him once in the nose. The rest of their scuffle until the gunshot was fired was probably them grappling with each other.

And furthermore, we have only Zimmerman's less-than-trustworthy word that Trayvon attacked. It's true that Trayvon had no wounds that indicate Zimmerman hit him, but that doesn't mean Zimmerman didn't initiate physical contact. He could have grabbed Trayvon, pulled his weapon, pushed him, or cornered him--all actions that might make Trayvon think his only option was to hit the guy to save himself.

Can that be proven? I don't know. But again, the only evidence otherwise is the word of Zimmerman, who has shown himself to be a liar multiple times.