The ATP and WTA have been forced to cancel or postpone tournaments until 2020 June 7th due to the Covid-19 pandemic; this could be an advantage for Roger Federer and a disadvantage for Novak Djokovic and Rafael Nadal. Despite the frozen ranking until that date.
A very important premise must be made. June 7th is a tentative date because it is still difficult to predict the duration of the Coronavirus pandemic. But if all goes well and from June 8th players should come back to the court, there would be some situations to consider.
Federer will show up fresh and rested for the grass-season after his right knee surgery, in February. The surgery went well and the Swiss should return to the Tour in mid-June in excellent shape, ready for two very important months, where he will play at Wimbledon, at the Tokyo Olympics and at the US Open.
He could probably skip the Roland Garros, which was unilaterally moved by its organizers from 20 September to 4 October 2020, overlapping the Laver Cup. Federer's plan is probably outlined: playing Halle, Wimbledon, Tokyo Olympics and the US Open.
Nadal and Djokovic could have to have different plans. If the Spaniard and the Serb play in Wimbledon and Tokyo, there will be plenty to choose from between the US Open and the French Open. The two Slams will be played after only 7 days and, considering the matches at the best of five sets, perhaps they too will have to make a choice.
Or maybe Rafa e Nole will play both tournaments, but in this case, they will have to manage their energies, physical and mental, as well as a drastic change of surface. That's why perhaps at the US Open Federer he could be freer than his two rivals, both physically and mentally.
Also, for Djokovic, it is very important to acquire a good rhythm. The suspension of the Tour could bring Djokovic into a not-so dominant form at Wimbledon, both in terms of physical-technical and mental aspects.