2021 ATP Cup

The 2021 ATP Cup was the second edition of the ATP Cup, an international outdoor hard court men's team tennis tournament held by the Association of Tennis Professionals (ATP). It was held with 12 teams at Melbourne Park in Australia, from 2 to 7 February 2021.

It was originally supposed to take place with 24 teams in Brisbane, Perth and Sydney from 1 to 10 January 2021, but was changed due to the impact of the COVID-19 pandemic.

Following a case of COVID-19 in the tournament's quarantine hotel, all matches scheduled for 4 February have been suspended.

Team Serbia was the defending champion, but got eliminated in the group stage. Team Russia won the tournament, defeating Italy 2–0 in the final.

ATP ranking points

 * Maximum 500 points for undefeated singles player, 250 points for doubles.

Entries
11 countries qualified based on the ATP ranking of its highest-ranked singles player on 4 January 2021, and their commitment to play at the event. Host country Australia received a wild card. Switzerland withdrew after world number 5 Roger Federer was ruled unfit to compete at the event due to a knee injury.


 * Rankings are as of 1 February 2021.

Group stage
The 12 teams were divided into four groups of three teams each in a round-robin format. The winners of each group will qualify for the semifinals.

Overview
T = Ties, M = Matches, S = Sets

Spain vs. Greece
Note: By ATP Cup rules retired match is not counting into percentage of sets and games.

Austria vs. France
Note: By ATP Cup rules retired match is not counting into percentage of sets and games.