Roger Federer has raised the prospect of merging the governing bodies that oversee the men's and women's professional tennis tours.
The 20-time Grand Slam champion began a string of tweets on Wednesday by saying the shutdown of tennis because of the coronavirus pandemic has given the sport an ideal opportunity to assess its future.
"Am I the only one thinking that now is the time for men's and women's tennis to be united and come together as one?" Federer wrote, sparking an initial flurry of replies.
Grand Slam champions Simona Halep were among those replying to express their agreement with the idea.