In the first singles match Janko Tipsarevic won his 30th Davis Cup match as he beat Filip Prpic in straight sets 6-3 6-3 6-4.
World no.22 Viktor Troicki then handed Serbia a 2-0 lead as he overcame the Swede Michael Ryderstedt 6-4 6-3 5-7 6-3 and the Serbian team was only one point away from booking their place in the quarterfinals.
But the Swedish team wasn´t going to give up without a fight. Johan Brunstrom and Robert Lindstedt gave the Swedes a chance for a comeback as they defeated Janko Tipsarevic and Nenad Zimonjic in tough five sets 3-6 6-3 7-6 (4) 6-7 (3) 10-8.
So it was all up to world no.9 Janko Tipsarevic once again. He didn´t show any signs of a hesitation as he battled out the deciding point for the Serbs with a 6-2 7-6 (5) 7-5 win over Michael Ryderstedt.
The last match was only for the records, world no.204 Dusan Lajovic defeated Filip Prpic in straight sets 6-4 6-4.
Serbia´s next opponent will be Czech Republic.
Austria booked their place in the last 8 with a 3-2 win over Russia.
Jurgen Melzer and Andreas Haider-Maurer bagged the first two points for Austria on day 1.
In Wiener-Neustadt, Austria, Melzer got the support of the home crowd in a 6-2 6-7(3) 6-4 3-6 6-1 win against Igor Kunitsyn. In the second match, Haider-Maurer upset world no.34 Alex Jr. Bogomolov, defeating him 6-1 6-4 6-7 (1) 6-2.
Going into the doubles match, the Austrian team had two great players to rely on. But Oliver Marach and Alexander Peya didn´t live up to the expectations as they went down to Nikolay Davydenko and Mikhail Youzhny 7-6(1) 6-7(7) 7-5 3-6 6-4. The faith of the tie was going to be decided on the last day of play.
The Austrian Davis Cup team didn´t have to wait long for their victory as Jurgen Melzer outclassed Alex Jr. Bogomolov 6-2 6-4 6-1 and the celebration could begin.
Igor Kunitsyn´s win against Haider-Maurer 4-6 6-4 6-7 (4) came too late and Austria will now play Spain in the quarterfinals.
Croatia beat Japan 3-2 in a tough encounter in Hyogo, Japan.
The first point went to Japan as Go Soeda managed to come back from two sets down against Ivan Dodig, winning 6-7 (3) 3-6 6-4 6-3 7-5.
But world no.43 Ivo Karlovic proved to be a huge support for the Croatian team. He defeated Kei Nishikori in a surprisingly easy match 6-4 6-4 6-3 and levelled the match after the first day of play.
Ivo Karlovic and Ivan Dodig teamed up to secure the second point for their country as they beat Tatsuma Ito and Yuichi Sugita 6-4 6-4 3-6 6-3.
Kei Nishikori brought back hope for the Japanese with a 7-5 7-6 (4) 6-3 win against Ivan Dodig.
It was once again Karlovic who had to step in and he proved that he is a top player. Prevailing against Go Soeda with a 7-6 (4) 6-1 6-4 scoreline, the Croatian team moved into the quarterfinals, where they will face Argentina.