More than 150 doubles players - including Wimbledon champions and tennis legends - urge the ATP to rethink"drastic"cuts which they believe could kill the format. The percentage of prize money devoted to doubles could fall from 20% to 10% - with the difference redistributed to singles players. They suggest a 20% share of the prize money for doubles is disproportionate to the interest shown by fans.
The doubles players argue the ATP should do more to promote their discipline and attract greater audiences, pointing out it is the format played by most club members and therefore more relatable.
With fewer singles players now competing in doubles, it believes the current size of the standalone doubles events puts severe strain on tournaments.
The players still believe there is little appetite for negotiation from the ATP.
Others within tennis believe reform is needed.
In 2005, the American brothers led players in a lawsuit against the ATP, when it planned radical changes to doubles. In a show of collective action, the players have written an open letter to the men's governing body as they fight proposals which would cut draw sizes and reduce prize money from 2028.
'You're taking our jobs' - doubles players angry at proposed cuts On Monday, a group of 137 current players, 28 legends and 20 national federations signed a letter which they hope will pressure the ATP into rethinking the proposals.