Evert expects Serena to add to her tally at Wimbledon because the grass court best suits her style of play.
Petchey believes that missing the American hardcourt scene will do Nadal a world of good before the clay season.
Zverev parted ways with Ferrero due to an argument between the two after his loss at the Australian Open.
Federer has now won three of the five Grand Slams following the turn of 2017 since coming back from a knee injury.
Nadal has also pulled out of Indian Wells and Miami scheduled to take place this month aspart of the Sunshine double.
Federer, Nadal and Djokovic have dominated the men's singles game for over a decade winning 33 of the last 41 Grand Slams.
Kuznetsova has praised Federer's wife Mirka and his team for being the cornerstone of his success at 36.
Djokovic has not played since losing to Hyeon Chung in the Australian Open fourth round, after which he underwent an elbow surgery.
Federer lost three Grand Slam finals to Djokovic, who was in his prime during the period and was markedly better than the Swiss ace..
Federer is currently unbeaten in 2018 having first won the Australian Open and then followed it up with the title at the Rotterdam Open.
The Spaniard has confirmed his withdrawal from Indian Wells and the Miami Open after suffering a recurrence of a hip injury.
Rafael Nadal, who suffered a hip injury at the 2018 Australian Open, was expected to return to action at the Mexican Open.
Roger Federer has previously tipped Alexander Zverev and Nick Kyrgios as potential future Grand Slam winners.
The Serbian is supportive of the changes but wants a debate on the timing of the World Cup of Tennis.
Current world number 12 heading back to the practice court to "find his highest level" after struggling on his return from knee surgery.
A decision over whether the Swiss will compete on clay in 2018 will not come before the end of the BNP Paribas Open.
Roger Federer won his 20th men's singles Grand Slam title at the 2018 Australian Open.
Roger Federer, Rafael Nadal and Novak Djokovic have won a combined 48 Grand Slams.
Roger Federer currently has 97 men's singles titles, which include 20 Grand Slams. He is second on the list behind Jimmy Connors, who has 109.
The Spaniard admits he could skip the Sunshine Double to ensure he is fit for the entire clay court season.
New proposals to overhaul the Davis Cup into a World Cup-style competition have drawn a mixed response from the tennis world.
Roger Federer and Rafael Nadal have played each other 38 times during their ongoing 14-year rivalry that started at the 2004 Miami Open.