has Nikolay Valuev ever been knocked down?

Yeah, but that's because he was held up by the ropes, which is considered the same as a knockdown, so that's a little different.

 

And FWIW, there isn't a standing 8-count in the amateurs for the most part either. The states that eliminated standing 8-counts did so for both amateur and professional boxing. The rationale was that if you're hurt badly enough to get the 8-count, then you're hurt badly enough to just stop the fight.

 

didnt danny williams get two standing 8 counts in that so called fight he had recently in spain

 

http://www.boxrec.com/media/index.php/Standing_eight-count

Piece of advice: it's best to first educate yourself on the subject - saves you from posting nonsence and looking silly in other people's eyes.