Reigning World Cup champions Serbia progress to the final of the competition . They complete a 4 - 1 victory over Serbia by winning both reverse singles in Novi Sad . Croatia , USA , Germany , Spain and Russia are also through to the last eight . Kazakhstan provide the highlight of the first round with a 3 - 0 win over the Czech Republic .
Reigning Davis Cup champions Serbia progress to the quarterfinals of the competition . Serbia complete a 4-1 victory over India by winning both reverse singles in Novi Sad . Croatia , USA , Germany , Spain and Argentina are also through to the last eight . Kazakhstan provide the shock of the first round with a 3-2 win over the Czech Republic .