Apart from Federer, former Serbian world number one Ana Ivanovic, legendary Pete Sampras, Gael Monfils and India's Sania Mirza and Rohan Bopanna form the Indian team.
Australian Davis Cup coach Josh Eagle and David Macpherson, who coached legendary American twins Mike and Bob Bryan, were revealed as coaches of the Singapore 'Slammers' and the UAE 'Royals' respectively.
Philippines' number on player Treat Huey will be part of the Manila 'Mavericks' as player-coach.
"Together, all four coaches will help their respective teams formulate a winning strategy as they compete across five single-set matches involving men's singles, women's singles, men's doubles, mixed doubles and past champion singles to determine a winner," an IPTL release said.