UFC Champ Chris Weidman -- I Destroyed Anderson Silva In His Prime!!!

Newly-crowned UFC champ Chris Weidman says he's unstoppable -- telling TMZ, he destroyed UFC's reigning middleweight king Anderson Silva when no one else could ... and he's ready to do it again in a few months.

There's a lot of speculation that Silva succumbed to Weidman over the weekend because he's getting old and has lost his edge -- but Weidman's not buying it, telling us Silva was as strong as ever in the Octagon ... he just wasn't strong enough.

Sounds like fighting words to us ... which is good because Weidman and Silva are already set to rematch very soon.