Belgium and Argentina set up a Davis Cup semifinal in September, while Britain took the lead against France, and Australia stayed alive in the quarterfinals on Saturday.
Belgium reached its first semis since 1999 when Ruben Bemelmans and Kimmer Coppejans won the doubles for an unbeatable 3-0 lead over Canada on clay in Ostend.
Bemelmans and his fifth different partner in Davis Cup, Coppejans, beat Daniel Nestor and Canada's own newcomer, Adil Shamasdin, 7-5, 3-6, 6-4, 6-3 in 2 1/2 hours. Coppejans, the Junior French Open champion three years ago, served out the last game to love for the win in his first Davis Cup rubber.