US Open, the final Grand Slam of the season, starts Monday, August 28, at Flushing Meadows in New York.
Frenchman Jo-Wilfried Tsonga recorded a first win over Rafael Nadal in almost four years after producing some scintillating tennis to beat the Spaniard in the semi-finals of the Shanghai Masters on Saturday. He will face Novak Djokovic in the final.
Top seeded Briton Andy Murray was knocked out of the Australian Open in the fourth round on Sunday, losing 7-5 5-7 6-2 6-4 to German world number 50 Mischa Zverev on Rod Laver Arena.
The triple grand slam winner, who will take over from Serb Novak Djokovic at the top when the rankings are updated on Monday, still went out on centre court for a practice session in front of a bemused crowd.
Glancing up at the legends of tennis can make 17-times Grand Slam champion Roger Federer push too hard for the "wow" factor, so new coach Stefan Edberg can expect a cold shoulder from the cool Swiss when watching from the stands.
Novak Djokovic barely got out of first gear but had more than enough in the tank to beat Briton Kyle Edmund 6-3, 6-3 in the second round of the Miami Open on Friday.
A summary of Novak Djokovic's rise in the tennis circuit in photos.
Defending champion Rafael Nadal progressed to the second round of the US Open after fellow Spaniard David Ferrer retired midway through the second set due to a calf injury.
A summary of sports events and sports persons, who made news on Tuesday
Roger Federer glided to victory on another hot, steamy day at the US Open, the envy of a clutch of men's players made to work overtime on Tuesday at the season's final Grand Slam.
Stanislas Wawrinka had to dig deep to beat Borna Coric at the Western & Southern Open in Cincinnati on Wednesday and conceded his thoughts had been far from tennis over the past few days.
Bernard Tomic is set to sit out the Australian Open after Tennis Australia (TA) decided not to award him a wildcard to the main draw, the organisers said on Thursday.
Swiss teenager Belinda Bencic capped a brilliant run to the Rogers Cup title on Sunday.
Dani Alves has blamed the media for Brazil's unsuccessful World Cup campaign but conceded that the team did not prepare properly ahead of the humiliating 7-1 defeat by Germany in the semi-final.