Sydney International: Angelique Kerber labours past Lucie Safarova, Sloane Stephens stunned by Camila Giorgi
Kerber will meet second-seeded Venus Williams who received a bye in the first round.
Mubadala World Tennis Championship: Jelena Ostapenko honoured to play in Serena Williams' comeback match
Williams also has more grand slam singles titles – 23 – than the age of her rival Saturday, Ostapenko.
Rafael Nadal pulled out of the ATP Finals admitting he had lost his fitness battle after crashing to defeat to David Goffin in a thrilling encounter.
ATP Finals: Rafael Nadal admits not training at 100% after injury scare, hopes to be ready for event
Rafael Nadal said he "hopes" to be ready for his opening match at the ATP Finals but admitted he has not been training at 100 percent after an injury scare.
Simona Halep set her sights on breaking through for her first Grand Slam title on Sunday after securing the year-end World No 1 ranking — and a vote of confidence from Roger Federer.
French Open Superseries: India's shuttlers reassert dominance on opening day even as Parupalli Kashyap falls
It is clear that a clutch of talented and hardworking players from India is becoming a more serious threat to the established stars who would have brushed them aside without a second thought barely a year ago.
Former World No 1 Karolina Pliskova is confident that splitting with coach David Kotyza will not be a hindrance as she attempts to go it alone over the home stretch of the season, leading up to the WTA Finals in Singapore in October.
US Open 2017: Semi-final spot caps Madison Keys' comeback run after second wrist surgery in 10 months
Madison Keys hit a low point in May and doubted she could ever win another tennis match. Now she's playing in the US Open semi-finals.
US Open 2017: Rafael Nadal wishes he gets to play rival Roger Federer in a final at Flushing Meadows
Rafael Nadal believes it's sad that he and Roger Federer have never met in a US Open final, insisting the two Grand Slam warriors will have to keep playing until it happens.
Their rivalry has stretched 13 years and 37 matches but Rafael Nadal and Roger Federer have never met at the US Open, a staggering anomaly which seems certain to be corrected at 2017's concluding Grand Slam.
Former World No 1 and five-time Grand Slam title winner Sharapova is still rebuilding her career following a 15-month doping ban which ended in April.
Murray, a two-time Wimbledon champion, will play the first match on Centre Court on Monday against Kazakhstan's Alexander Bublik.
Ostapenko was just two when Williams began her grand slam winning spree at the 1999 U.S. Open, and over the last two decades the American is the only woman to have achieved a feat the Latvian is now targeting - the French Open-Wimbledon double in the same year.
Djokovic, who has struggled this year and suffered a quarter-final exit at the French Open, fell out of the top two spots in the world rankings this month for the first time since March 2011.
Halep, who finished as a runner-up at the 2017 French Open, pulled out of the Aegon Classic in Birmingham due to an ankle injury last week.
Andy Murray's shock loss ended his 14-match winning streak on grass and his 10-match unbeaten run at Queen's.
Ilkley Trophy: Yuki Bhambri through to second round after winning testing encounter against Peter Polansky
Yuki was down a match point at 6-7 in the second set tie-breaker before he forced a third set and finally prevailed in the contest after two hours and 35 minutes.
Kyrgios, who has been bothered by shoulder problems in recent months, is still determined to compete at Wimbledon, which gets underway on July 3.
Wimbledon 2017: Andy Murray gears up for third title says, wants to make the most of every tournament
Andy Murray says that maybe the next couple of years are the last few where he has a chance to compete for the majors and the biggest tournaments. Raises doubts over how long he is going to play his best.
Basking in the glory of his first Grand Slam title win, Rohan Bopanna says his mixed doubles title triumph at the French Open has strengthened his belief that "one should never give up on dreams".