Britain’s Andy Murray will represent Bangkok in a four-team contest for the International Premier Tennis League later this year.
Novak Djokovic has earned his right to miss Serbia's Davis Cup first round tie, according to team coach Bogdan Obradovic.
Roger Federer will join Australian Open winner Stanislas Wawrinka in Switzerland's Davis Cup first-round tie against Serbia.
Serbia's decision to omit Novak Djokovic from the doubles was "like leaving a Ferrari in the garage", said Radek Stepanek.
The Czech Republic won their second successive Davis Cup title after Radek Stepanek beat Dusan Lajovic 6-3 6-1 6-1.
Serbia's Novak Djokovic has been left out of Saturday's doubles in the Davis Cup final against holders Czech Republic.
Tomas Berdych and Radek Stepanek beat Ilija Bozoljac and Nenad Zimonjic to give Czech Republic a 2-1 lead in the Davis Cup.
Novak Djokovic won the opening match of the Davis Cup for Serbia before Tomas Berdych restored parity for the Czech Republic.
Serbia's hopes of winning a second Davis Cup title have suffered a blow with second-ranked Janko Tipsarevic pulling out.
Winning a second Davis Cup title with Serbia would cap a fantastic end to the season for Novak Djokovic.
Serbia's Janko Tipsarevic faces a race against time to get fit for next month's Davis Cup final against the Czech Republic after being hampered by a foot injury
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