An eleven year old rated 1753 (with serious demeanour)? the GM was probably crapping himself for the first few moves, imagining the horror headlines if he lost to the "next big thing", before he was even discovered.
I hate playing kids, too scary.
You've probably played someone hundreds of points higher than you, on this site.
To paraphrase Crocodile Dundee. That's not a mismatch.
This is a mismatch!! "Second seed GM Alexander GM Moiseenko of Ukraine, rated 2670, faces a youngster Vojdani Siavosh, 11, rated 1753, in the first round.".
http://www.chessbase.com/newsdetail.asp?newsid=7045
See the lineup of 112 unrated players hoping to get their turn. http://www.fajrchess2011.com/Home/PairingResultPGN
Let's assume you knew in time and you are in Iran, does not matter how or why. (Maybe next year.) Would you pay US$180 for a chance to play Moiseenko or Rustam Kasimdzhanov.
FIDE's logo is prominently displayed. How many ratings points would you steal from them (if they passed out from the heat and timed out)?