Frederic Niemeyer (who's now 2nd in the Canadian rankings), after 3 rounds of qualifying, just beat Ivo Heuberger of Switzerland (ranked 135, the 4th seed), in the Challenger at Tallahassee, in 3 sets:
http://www.atptennis.com/en/tournaments/challenger/
The top seed is Jonas Bjorkman.
Frederic is scheduled to play in the 2nd round Tsonga of France, thus another tough match.