2024 United Cup

Germany defeated Poland 2–1 in the tennis final to win the 2024 United Cup. Germany won the title after Alexander Zverev saved two match points in his singles tie against Hubert Hurkacz. All five of Germany's matches were decided by the final mixed doubles match, with Zverev playing singles and doubles in all the ties. The United States was the defending champions, but was eliminated in the group stage.

This was the second edition of the United Cup, an international outdoor hard court Mixed-sex team tennis competition held by the Association of Tennis Professionals (ATP) and the Women's Tennis Association (WTA). Serving as the opener for the 2024 ATP Tour and the 2024 WTA Tour, it was held from 29 December 2023 to 7 January 2024 at two venues in the Australian cities of Perth and Sydney. It offered both ATP rankings and WTA rankings points to its players; a player was able to win a maximum of 500 points.

Format
Both cities hosted three groups of three countries in a round robin format. Each tie consisted of one men's and one women's singles match, and one mixed doubles match.

The six group winners and the best runner-up in each city will advanced to the quarterfinals. There was a travel day allocated before the semi-finals and final take place in Sydney.

Qualification
18 countries qualified as follows:
 * Six countries qualified based on the ATP ranking of their number one ranked singles player.
 * Six countries qualified based on the WTA ranking of their number one ranked singles player.
 * The final six countries qualified based on the combined ranking of their number one ranked ATP and WTA players.

In exchange for being the host nation, Australia was guaranteed one of the spots reserved for teams with the best combined ranking should they have failed to qualify on merit, though this was not needed as Australia qualified directly in the fourth ATP ranking spot.

Teams featured up to three players from each tour.

Venues
Perth and Sydney hosted three groups of three countries in a round robin format and two quarterfinals. Sydney hosted the semifinals and the final on the last two days of the tournament.

ATP / WTA ranking points

 * Maximum 500 points
 * WTA only: a player who won five matches received 500 points; a player who won four out of five matches received a minimum of 325 points.

Prize money
The 2024 United Cup had a total prize money pool of US$10,000,000. This was 33.33% lower than 2023 due to fewer matches being played. The distribution was split into three components: participation fee, match wins, and team wins.

Entries
16 countries qualified based on their ATP/WTA singles rankings on 16 October 2023, and players' commitment to play at the event. The remaining two teams qualified based on their ATP/WTA rankings on 20 November.

The first 16 qualified countries, the best 5 by ATP ranking, the best 5 by WTA ranking, plus the best 6 in combined rankings were announced on 19 October 2023. The last 2 qualified countries, the 6th by ATP or WTA rankings, were announced on 21 November 2023.


 * Singles rankings are as of 25 December 2023.

Group stage
A country’s position within its group is determined by number of ties won and ties played. If three teams are tied with the same number of tie wins, then the team having played fewer total matches (singles and mixed doubles) will be eliminated and the winner of the head-to-head matchup between the two remaining teams advance. If still tied then the following procedures decide the group order: the most match wins (singles and doubles), then the highest percentage of matches won, then percentage of sets and then games won.

Overview
G = Group, T = Ties, M = Matches, S = Sets † Group F standings were determined by percentage of games won.

Group A
Host city: Perth

Group B
Host city: Sydney

Group C
Host city: Perth

Group D
Host city: Sydney

Group E
Host city: Perth

Group F
Host city: Sydney

Ranking of second-placed teams
The best runner-up quarter-final spot is determined by the number of ties won and the number of ties played. In a tie between three teams, the team having played fewer total matches (singles and mixed doubles) will be eliminated and, if still tied then the team with the most match wins (singles and doubles). If still tied, then the ranking is determined by, in order: 1 the highest percentage of matches won 2 the highest percentage of sets won, and 3 the highest percentage of games won.

Host city: Perth

Host city: Sydney