Host Belgium won a pair of dead rubbers on Sunday, as Serbia exited Charleroi with a 3-2 victory in a best-of-five opening-round Davis Cup tie.
David Goffin topped Serbian fill-in Boris Pashanski 6-4, 2-6, 6-2 and Steve Darcis bested another Serbian replacement, Nenad Zimonjic, 6-2, 6-4 to wrap up the weekend set.
On Saturday, Zimonjic and Viktor Troicki lifted the Serbs to a clinching four- set victory over a Belgian duo of Darcis and Ruben Bemelmans. It gave the visitors an unassailable 3-0 lead.
The 2010 champion Serbs opened a 2-0 advantage on Friday when Troicki battled back from an 0-2 deficit to beat Goffin and world No. 1 star Novak Djokovic cruised past Olivier Rochus in straight sets. Djokovic is fresh off his third straight and fourth overall Australian Open title last week.
Serbia, which lost to Belgium in the lone previous Davis Cup encounter back in 2005, advanced to April's quarterfinals against the United States.