The world number one's only title in 2017 came at the Dubai Tennis Championships.
Nadal has made 5 finals and won 2 titles thus far in 2017.
Murray lost to Coric in straight sets at the Madrid Open, as Nadal and Djokovic progressed.
Nadal defeated Nick Kyrgios comfortably 6-3, 6-1 while Murray suffered defeat yet again.
Federer has won three of the four tournaments he has played in 2017.
Nadal defeated Fabio Fognini 7-6, 3-6, 6-4 in the second round in Madrid.
The Roger Federer Foundation provides education programs to children in southern Africa and Switzerland.
World number two parted ways with Marian Vajda, Gebhard Phil-Gritsch and Miljan Amanovic last week.
Murray defeated Marius Copil 6-4, 6-3 to go through to the last 16.
Murray won the Rome Masters and finished runners-up in Madrid and the French Open in 2016.
Murray says his busy schedule in 2016 took a lot out of him.
Federer has risen from world number 17 to number four in a span of three months.
Konta recently won the Miami Open and climbed to number 7 in the world rankings.
Nadal believes the duo will be back sooner rather than later.
Federer and Nadal have played in a combined eight finals since the start of the season.
Three-time Grand Slam champion remains impressed by AJ's humility as star continues to rise.
Nadal has been installed as favourite to win the French Open in 2017 owing to his current form on clay.
Murray also believes Sharapova will be handed a wildcard for Wimbledon if she doesn't make it by right.
Joshua revealed he received calls from Elton John and Dr Dre prior to his fight against Klitschko.
The defeat was Andy Murray's first ever against the 23-year-old Thiem.
Andy Murray will face Dominic Thiem in the 2017 Barcelona Open on Saturday.
Rafael Nadal won his 10th Monte Carlo Masters title on Sunday, 23 April.