Belgian eigth seed Kristof Vliegen beat Switzerland's Marco Chiudinell 7-6 (7-4) 6-0 to progress to round three.

BBC: SPORT | Tennis | Federer begins defence in Halle

Tomas Berdych beat Jiri Novak in straight sets to advance while Belgian Kristof Vliegen upset compatriot Christophe Rochus.

BBC: SPORT | Tennis | Rusedski races through in Paris

Monte Carlo champion Rafael Nadal remained on course for another clash with Federer by beating hammering Belgian Kristof Vliegen 6-1 6-1.

BBC: SPORT | Tennis | Seeded trio falter in Monte Carlo