For the 2019 edition, the format of the cup is changed.[23] The main modification is the World Group taking place at one location and in one week, with eighteen teams divided in six round-robin groups of three teams each, with the winners of the groups and the two best second places advancing to quarterfinals. The series between the teams in this stage will feature two singles matches and one doubles match, instead of the best-of-5 series, with the matches changing from best of 5 sets to best of 3. As the World Group will now take place as one single tournament, this event has been named as the Davis Cup Finals.