ATP board member Mark Knowles says Roger Federer wasted little time in contacting the governing body to "make sure things are happening" in the wake of the coronavirus outbreak.
Federer is currently out injured following knee surgery, but Knowles says he was immediately in touch when the coronavirus crisis intensified last week.
Fellow 'big three' members Nadal and Djokovic were also consulted, highlighting the positive influence they have in tennis.
"I think one thing Roger, Rafa and Novak do not get enough credit for [is that] these guys are so involved which I think is incredibly lucky for all of us," Knowles told the Tennis Channel.
"Three of the greatest players of all time but they are in on every decision.
"You would think Roger went under knee surgery say 'I going to remove myself from the tour.
"But he was one of the first guys to get in touch and make sure things are happening and we are making decisions accordingly."
Tennis was one of the first major sports to cancel events, and Knowles admits that moving so quickly posed tremendous challenges.
"It has been a very challenging time obviously. The world has really changed for us, not just for tennis but globally over the last five days.
"There's been a lot of conference calls trying to get everybody aligned.
"We are a very international sport so the way we are made up with tournament board reps, player board reps, player council members, our constituents, all the players, they are all over the world.
"So trying to get everybody together and really come up with a unified decision, there are so many layers to this.
"Once you think you've got a handle on it, there's a whole other element, whether it is prize money, pension, player commitment, media commitment.
"There are so many factors to this, it is going to take some time.
"But we feel like we have been out in front as the ATP Tour has been addressing all the issues.
"We've looked at almost everything and really tried to be out in front the best that we could."
- TEAMtalk media