Tomas Berdych happy to play in Singapore for the UAE ROYALS
Here are the teams and players in action in Singapore:
Feliciano Lopez, Ivan Dodig, Kirsten Flipkens, Mark Philippoussis, Rohan Bopanna, Sania Mirza and Thomas Enqvist.
Fernando Gonzalez, Fernando Verdasco, Jean-Julien Rojer, Jelena Jankovic, Kurumi Nara and Marat Safin.
Carlos Moya, Kiki Bertens, Marcelo Melo, Marcos Baghdatis, Nick Kyrgios and Rainer Schuettler.
Ana Ivanovic, Daniel Nestor, Goran Ivanisevic, Martina Hingis, Pablo Cuevas, Tomas Berdych and Thomas Johansson.
*** Roger Federer and Serena Williams have both pulled out of this season's International Premier Tennis League. Mahesh Bhupathi, managing director of the IPTL, said: "With the current economic climate in India and the uncertainty of spending money, I reached out to both Roger and Serena to explain the situation. They have been both been very supportive of the IPTL the first two seasons and we look forward to bring them in future years."