Singapore: Founder Mahesh Bhupathi on Thursday said the new International Premier Tennis League would add two more cities next year and had been forced to turn down two others as interest grows.

The Indian former doubles player said "I've got a line of people waiting outside my door" after the fast-paced IPTL's TV-friendly format proved a hit with players and fans. "We're definitely going to add two cities next year," Bhupathi told journalists in Singapore, during the four-stop tournament's second leg.