2010 champions, Serbia, have been handed a home tie against Croatia in the World Group first round next season.
Novak will defend four ATP titles from September 29 to November 16: Beijing, Shanghai, Paris and the ATP World Tour Finals in London.
No.10 seed Kei Nishikori upset the top seed in four sets – 6-4, 1-6, 7-6 (4), 6-3, becoming the first Asian man to reach a Grand Slam singles final.
Novak reached his eighth consecutive US Open semi-finals with a 7-6 (1), 6-7 (1), 6-2, 6-4 win over Andy Murray on Wednesday night.
2011 titlist powered into the last eight at Flushing Meadows on Monday, with a 6-1, 7-5, 6-4 victory over no.22 seed Philipp Kohlschreiber.
2011 champion advanced to the fourth round in New York on Saturday as he dismissed Sam Querrey 6-3, 6-2, 6-2.
Nole improved his record to 6-1 against Paul-Henri Mathieu, beating the Frenchman 6-1, 6-3, 6-0 for a place in the US Open third round.
The top seed closed out a routine 6-1, 6-2, 6-4 win over world no.79 Diego Schwartzman to advance into the second round of the 2014 US Open on Monday night.
Top seed and 2011 champion will open campaign in his 10th US Open appearance against world no.79 Diego Schwartzman of Argentina.
No.16 seed Tommy Robredo stunned world no.1 and four-time former runner-up 7-6 (6), 7-5 in R3 of the Western & Southern Open on Thursday.
29.09. - 05.10.2014.