The ATP Cup nation-based team competition is set to come back for a second edition, Feb. 1-5. This year's tournament, played at Melbourne Park, will showcase 12 teams, as opposed to 2020's 18.
Qualification is determined by the country's highest-ranked singles player. So the United States, whose top men's player is John Isner at No. 25, isn't fielding a team.
Still, with every Top-15 star except for Roger Federer in attendance, the lineup is sure to impress. Here is the mix of established stars and role players joining the spotlight in just a few weeks:
1
Serbia