The Scot lost 6-4, 6-4 to Richard Gasquet in his first singles match since January before saying he had turned down a wild card into the men's draw at the year's final Grand Slam.
As Serena Williams sits out a fourth straight Grand Slam, Simona Halep and Karolina Pliskova will join Caroline Wozniacki in a quest for a major breakthrough in Australia.
Naomi Osaka continued her stunning run of form with a 6-3, 6-2 victory over 23-times Grand Slam champion Serena Williams in the first round of the Miami Open on Wednesday, the latest big win for the 20-year-old Japanese player.
Second seed Sloane Stephens was shocked 2-6, 6-4, 6-2 by Germany's Andrea Petkovic in the second round of the Citi Open on Wednesday, disrupting the American's buildup to her US Open title defence.
A summary of sports events and sports persons, who made news on Thursday
News of all that's transpired on and off the football field.
Two time Miami Open winner Victoria Azarenka crushed Serbia's Jelena Jankovic.
Rohan Bopanna and Daniel Nestor went through several anxious moments before making it to the second round, even as Mahesh Bhupathi and Jurgen Melzer failed to, in the men's doubles at the Australian Open, in Melbourne, on Thursday.
IMAGES from the PNB Paribas Open played at Indian Wells in California on Monday
Victoria Azarenka cannot wait to renew her rivalry with close friend Serena Williams in what could shape up to become a future battle of the tennis mums.
The controversy stoked by marathon runner O P Jaisha took an interesting turn with Indian athletics contingent's middle and long distance coach Nikolai Snesarev, on Thursday, asserting that she herself had said no when asked by him if she would need personalised refreshment during the race in the Rio Olympics.
Caroline Wozniacki said she felt 'cursed' at Melbourne Park after losing in straight sets to a resurgent Victoria Azarenka in the Australian Open second round on Thursday.
Former world number one Garbine Muguruza was beaten 7-5, 6-4 by Aryna Sabalenka in the China Open second round on Tuesday while an ailing Jelena Ostapenko lost 6-0, 6-0 to Wang Qiang.
Seven-time Italian Open winner Rafael Nadal lost 7-6(7), 6-2 to Stanislas Wawrinka.
A summary of sports events and sports persons, who made news on Sunday
A summary of sports events and sports persons, who made news on Wednesday
Milos Raonic overcame third seed Grigor Dimitrov 7-5, 3-6, 6-3 to reach the third round at the Madrid Open on Tuesday and set up an all-Canadian clash with teenager Denis Shapovalov.
IMAGES from Day 7 at Wimbledon on Monday
Ailing knees, Father Time and even a resurgent Victoria Azarenka stand in the way of Serena Williams clinching her seventh Australian Open title and giving her one more shot at an achievement that would cap her storied career.
'They insist to compete in national cross country just a week ahead of the much important Mumbai Marathon where top runners will compete. Imagine, if your boss tells you each week, several times a day 'I stop your salary, I stop your salary', how you would feel...'
Two-time Grand Slam winner Victoria Azarenka crashed out of the French Open in the first round losing 5-7, 5-7 to Katerina Siniakova on Monday, playing only her fifth tournament of the year after a legal battle over the custody of her son.
Hot favourite Caster Semenya qualified for the women's 800metres semi-finals at the Rio Olympics with supreme ease on Wednesday and will no doubt be braced for another wave of discussions about her gender should she go on to take the gold medal on Saturday.
The seventh-seeded Bulgarian advanced to his eighth ATP World Tour Masters 1000 quarter-final with a 6-3, 7-5 victory over Del Potro, who struggled with the intense heat in the closing stages of the one hour, 39 minute match.
IMAGES from the matches played at the PNB Paribas Open at Indian Wells on Sunday
World number one Serena Williams was at her lethal best as she crushed Romanian Simona Halep 6-0, 6-4 to romp into the semi-finals of the Western and Southern Open on Friday.
A summary of sports events and persons who made news on Friday
IMAGES from the matches played on Day 2 of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on Tuesday.
Photos from the matches played at the Miami Open on Monday
World No 1 Serena Williams fought her way to a 7-5, 7-5 win over defending champion Li Na to reach the final of the Western and Southern Open on Saturday and close in on one of the few titles to elude her.
After a rough past couple of months that included a tight loss to Maria Sharapova at the French Open and an injury-enforced withdrawal from Wimbledon, World No 3 Victoria Azarenka enters the Southern California Open as hungry as ever.
Federer, who skipped the entire clay court season after winning the Australian Open and claiming titles at Indian Wells and Miami this year, will next play defending champion Florian Mayer who beat Frenchman Lucas Pouille in three sets.
2014 Asian Games bronze medalist and national record holder Sudha Singh wants to make amends for a disappointing outing at the London Olympics.
Maria Sharapova joined Serena Williams in making an early exit from the Australian Open on Monday but defending champion Victoria Azarenka swept into the quarter-finals with an 18th straight victory at Melbourne Park.
Serena Williams edged past Spain's Garbine Muguruza 2-6, 6-3, 6-2 to reach the quarters.
Images from the Australian Open matches played on Tuesday.
Images from Day 5 of the US Open in New York on Friday
Images from Day 3 of the 2016 Australian Open in Melbourne, on Wednesday
In-form Victoria Azarenka battled past an ailing but determined second seed Angelique Kerber to set up a Miami Open final showdown against Svetlana Kuznetsova with a 6-2, 7-5 victory on Thursday.
World number one Simona Halep saved three match-points before edging past an inspired Lauren Davis 4-6, 6-4, 15-13 in a thrilling marathon to reach the fourth round of the Australian Open on Saturday.