Oldest world number one Roger Federer says he did not expect to return to such a high level after missing the final six months of the 2016 season with a knee injury.
Marin Cilic and Grigor Dimitrov will join Rafael Nadal and potentially Andy Murray at the Queen's Club Championships in June, tournament organisers have confirmed.
Juan Martin del Potro beat Federer and Nadal on the way to his first and only Grand Slam title at the 2009 US Open.
The 31-year-old trails his Swiss rival by 600 ranking points ahead of the Sunshine Double starting this week.
The Swiss is now 600 points ahead of Rafael Nadal despite not hitting a ball last week, as the Spanish missed the Mexican Open.
Oldest-ever tennis world number one will take on Jack Sock in a singles exhibition match in addition to teaming up with Bill Gates to face the American and Savannah Guthrie.
Roger Federer decided to give the tournament a miss after making his way to the top of the ATP rankings following his win at the Rotterdam Open.
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.
The 20-year-old German feels he has proved he can win a grand slam title in the future with a handful of high-profile wins.
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.
Lewis Hamilton is targeting his fifth F1 drivers' title in 2018 with Sebastian Vettel expected to be his main rival.
Roger Federer is currently on a break and will return to action at the Indian Wells Masters beginning 8 March.
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 and Caroline Wozniacki already lead the list of top tennis prize money earners in 2018.
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.