Sharapova will make her return from a 15-month ban at the Porsche Grand Prix in April.
Nadal believes the future of tennis needs changes to attract more fans.
Djokovic has won eight of nine Masters 1000 titles in his career.
Federer is playing in his second tournament after his win at the Australian Open in January.
Maria Sharapova will make her return to professional competition next month.
World number one defeated 6-4 7-6 in round two in California.
Nadal is pooled in the same quarter of the draw as Roger Federer and Novak Djokovic.
Murray lost 6-4, 7-6 (7-5) to Pospisil in the second round of the BNP Paribas Open.
Federer is currently ranked number 10 in the world.
Federer, Nadal and Djokovic have been drawn in the same quarter at the 2017 BNP Paribas Masters.
Sharapova is set to return to action in April 2017 following a doping ban.
Federer has won 18 Grand Slam titles, four more than the next best - Pete Sampras and Rafael Nadal.
The 35-year-old has dominated the women's game for a decade-and-a-half.
John De'Viana faces two counts of child cruelty following allegations made by his two children.
Nadal faces a possible fourth round clash against Federer and quarter-final against Djokovic.
Murray is currently ranked seventh in the Race to London after his recent win in Dubai.
Angelique Kerber will now reclaim the world number one rank.
Federer surprised many including himself when he won the 2017 Australian Open title.
Nadal recently lost in the final of the Mexican Open to Sam Querrey.
Djokovic still plans on playing for a long time.
Sharapova will return to the tour when her 15-month doping ban concludes at the end of April.
Murray seems to be back in form ahead of the Masters Series.
Verdasco will take on Andy Murray in the final of the Dubai Tennis Championships on Sunday.
Murray will be looking to win his first title in Dubai.
Djokovic more than holds his own in one of tennis' most competitive eras.
Federer bagged his first Grand Slam title since 2012 at the Australian Open this January.
Murray now faces Lucas Pouille in the semi-finals.
Federer was knocked out in the second round by world no 116 Evgeny Donskoy.
Sharapova will be free to play at the end of April 2017 when her doping ban ends.
The 23-time grand slam singles champion stuns two players during walk with fiancé Alexis Ohanian.