Twelve countries including Greece will battle for the trophy on February 1-5 in Melbourne, Australia.
Representing #TeamGreece is Stefanos Tsitsipas, Michail Pervolarakis, Markos Kalovelonis and Petros Tsitsipas.
Qualification is based on the FedEx ATP Ranking of each country’s top-ranked singles player, while Australia qualifies thanks to a host wild card.
This year’s ATP Cup will take place at Melbourne Park alongside two ATP 250 events, with the three tournaments being held the week before the Australian Open.
The draw will take place on 20 January, when the 12 teams will be divided into four groups of three for group stage, round-robin play. The four group winners will advance to the semi-finals.
More information on ATP Cup tickets will be released in due course.
Here are the teams, and the four players from each: