Sydney will be the centre of the tennis world for a week next January as the primary host of a mega event that boasts more prizemoney than any tournament except the four grand slams.

The likes of Novak Djokovic, Rafael Nadal and Roger Federer could feature at the upgraded Ken Rosewall Arena at Sydney Olympic Park for the inaugural $22 million ATP Cup, a 24-nation men’s teams competition bringing together the best players on the planet.

Star power: Roger Federer and the cream of men's tennis will battle out the quarters, semis and final of the new ATP Cup in Sydney from next year. Credit:AP

The preliminary round-robin rounds will be staged across six days in Sydney, Brisbane and a yet-to-be-confirmed third capital city, with Sydney then hosting the quarter-finals, semi-final and final over the remaining four days of the event.

The new tournament, a re-imagining of the former ATP World Team Cup held in Dusseldorf, will come just weeks after the first instalment of the controversial new Davis Cup finals, to be played in Madrid from November 18 to 24.