oh.that would be intresting
Could a 2000 rated player beat Magnus Carlsen?

A 2055 drew Li Chao at the Reykjavik Open in the first round... And that was considered EXTREMELY SURPRISING. Carlsen is much stronger than Li Chao :)

Yes. Statistically there's about a 1% chance of the 2000 scoring. Carlsen has lost to ~2000 rated players in blitz and bullet. There's a real, non-zero chance, especially if he plays in Olympiads where he is most likely to face low-rated players in tournament conditions.

It's possible to beat Carlsen if he makes a lot of blunders.
That's a LOT of blunders and a big IF.
Still, someone had to say it.
Carlsen is the chess terminator.
It takes someone with guts of steel like me to face up to him.

Last week a brazilian did beat Carlsen with black...
http://www.chess.com/blog/Gilmar8Andersen/magnus-carlsen-lost-to-a-beginner-in-brasil-in-a-simul

maybe?are you talking about yourself?
I am 1700 OTB, I am just working my way down the list.
what all boards?in a toarnament?
Chess Olympiads