Images from Day 1 of the Australian Open in Melbourne on Monday.
Novak Djokovic endured a fierce challenge to his Melbourne Park reign before overhauling Dominic Thiem 6-4, 4-6, 2-6, 6-3, 6-4 on Sunday to clinch an eighth Australian Open crown and reclaim the world number one ranking. While Rafa Nadal rules Roland Garros with 12 titles, Djokovic holds sway in the title match at Rod Laver Arena having never lost a final in Melbourne Park.
Belinda Bencic of Switzerland and Danielle Collins were among those to win their first-round matches at the Adelaide International
The former world No. 1 reached the semi-finals of the Bellsouth Open at home in Chile.
Paula Badosa survived a stiff challenge from Victoria Azarenka in the Indian Wells final, while Cameron Norrie battled back to defeat Nikoloz Basilashvili.
Penpix of the top men's contenders at the 2021 Australian Open
Australia's Alex de Minaur fought back from a set down to beat former world number one Andy Murray
Indian tennis player Prajnesh Gunneswaran finish runner-up at the Orlando Open, losing the summit clash of the ATP Challenger event to American Brandon Nakashima, in Orlando.
Novak Djokovic stopped American Mardy Fish 6-2, 3-6, 6-4 to win the Montreal Masters on Sunday, capping his competitive debut as world number one with a record-setting title.
The German world number seven claimed his first ATP crown of the year after besting Canada's Felix Auger-Aliassime 6-3, 6-3 to win the bett1HULKS Indoor title at the same venue last Sunday.
Argentina's World Cup winning captain Lionel Messi was named the Laureus Sportsman of the Year, while sprint champion Shelly-Ann Fraser-Pryce bagged the top women's honour.
The 18-year-old became the first Japanese player to win an ATP event for nearly 16 years when he won the Delray Beach International.
Novak Djokovic cruised through his first singles match in Australia since being deported last year.
Florian Mayer put more than a year of injury problems behind him to secure a 6-2, 5-7, 6-3 victory over teenager Alexander Zverev in an all-German final at the Halle Open on Sunday.
Fritz delivers as US win inaugural United Cup crown
The Frenchman won his second ATP Tour title when he outplayed third seed Jarkko Nieminen of Finland in the final.
Kyrgios added that he had been in communication with Tennis Australia chief executive Craig Tiley and United Cup tournament director Stephen Farrow about his injury.
World number one Nadal will meet Greek teenager Stefanos Tsitsipas in Sunday's showpiece when he will target a record-extending 11th title in Barcelona a week after claiming the Monte Carlo Masters for the 11th time.
Michel Kratochvil beat him in the USD 125,000 ATP Challenger Series in Segovia, Spain.
Nick Kyrgios said he pulled out of the Sydney Tennis Classic after testing positive for COVID-19
Opelka edges Kyrgios to set up all-American final with John Isner in Houston
Juan Martin del Potro, beaten in his six previous meetings with Roger Federer this year, turned the tables on the world number one to win a memorable Basel ATP final on Sunday.
World No 1 Andy Murray ended 2016 with a 6-3, 7-6(6) win over big-serving Canadian Milos Raonic to take third place at the year-ending exhibition tournament Mubadala World Tennis Championship in Abu Dhabi on Saturday.
Top-seeded American Mardy Fish outgunned Russian qualifier Evgeny Korolev 7-5, 6-3 to clinch his third ATP title at the Delray Beach International Championships on Sunday.
Canada's Milos Raonic beat Tommy Haas 6-4, 6-3 on Sunday to win his third straight San Jose Open title and bring the final curtain down on the second oldest men's professional tournament in the United States.
'I really look forward to going to Paris, to fight for the Grand Slam, and I am really looking forward to show my great level in a Grand Slam, too.'
'I'm disappointed and sad because after a good start to the season I was coming to a very important part of the year with very good feelings and good results.'
Friday's match was a straight shootout for a last-four place, with world number five Rublev the favourite having won his four previous matches against Ruud.
A summary of sports events and sports persons, who made news on Sunday
Rohan Bopanna won his first title of the season when he combined with Colin Fleming to claim the ATP Open 13 doubles trophy with a straight-sets win over Aisam-ul-haq Qureshi and Jeal-Julien Rojer in Marseille on Sunday.
Serbian Viktor Troicki ruthlessly dismantled ailing Kazakh qualifier Mikhail Kukushkin 6-2, 6-3 to win the Sydney International for his second career ATP title on Saturday.
Richard Gasquet won a 13th career singles title by beating fellow Frenchman Paul-Henri Mathieu 7-5 6-4 in the Open Sud de France final in Montpellier on Sunday.
Top seed Kei Nishikori of Japan became the first player to win three consecutive Memphis Open tennis tournament titles when he prevailed in straight sets on Sunday.
Bopanna had won this event with compatriot Divij Sharan in 2019.
Russian qualifier Daniil Medvedev stunned home favourite Kei Nishikori in Tokyo on Sunday, winning the final of the Japan Open 6-2, 6-4 in just over one hour.
Images from Day 2 of the Australian Open in Melbourne on Tuesday
Belarusian ninth seed Aryna Sabalenka held off a spirited challenge from American Alison Riske to win 6-3, 3-6, 6-1 and successfully defend her Wuhan Open title on Saturday.
India's Yuki Bhambri put up a valiant fight against sixth seed Robin Haase before losing his first round in the singles event of the ATP Chennai Open.
Kyrgios did not face a single break point and hit 18 aces, including two to close out the final.