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.
'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.'
Indian tennis stars Sania Mirza and Rohan Boapnna, who enjoyed good runs on the Pro circuit last week, bowed out of the second Adelaide ATP and WTA tournaments after first round defeats with their respective partners, on Tuesday.
Daniil Medvedev handed Novak Djokovic his first loss of the year, defeating the world no. 1 6-4, 6-4 in Dubai.
'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.'
IMAGES from matches on Day 4 of the US Open at Flushing Meadows in New York on Thursday.
The hot-headed Aussie rails against chair umpire, ATP after Miami Open loss
Serbia have been drawn in Group B alongside Spain, South Korea and Canada.
Nick Kyrgios said he pulled out of the Sydney Tennis Classic after testing positive for COVID-19
American great Pete Sampras said he does not expect any player to match Novak Djokovic's feat of winning the men's year-end world number one ranking seven times.
To mark 20 years of Ivanisevic's win, the ATP tweeted, his road to victory.
No matter who the opponent, or how big the adversity, Andy Murray never backs away from the fight, observes Deepti Patwardhan.
Andy Murray started working with former coach Daniel Vallverdu this month on a short-term basis as the multiple Grand Slam winner works towards rediscovering the form that took him to the top of the world rankings.
The second seeds cruised through the second set after a tense opener
The five top contenders for the men's title at the Australian Open, which starts on Monday.
Spain hope new world number one Carlos Alcaraz will be ready for their Davis Cup tie
Sumit Nagal fought fire with fire to bring India back in the Davis Cup World Group Play-off tie against Denmark, winning the second singles.
Former Davis Cup captain Anand Amritraj is baffled that India's best singles players are not able to win close matches on the ATP World Tour despite having a decent game to back them.
Wimbledon's decision to ban Russian and Belarusian players from this year's tournament following the invasion of Ukraine was wrong and lacked respect, world number one Novak Djokovic said on Monday.
India's Rohan Bopanna and Ramkumar Ramanathan registered a resounding straight-set win to cruise into the doubles semi-finals but it was the end of the road for compatriot Sania Mirza and her Ukrainian partner Nadiia Kichenok, in Adelaide, on Friday.
Australian Open champion Rafael Nadal resumed training on Monday after four weeks out due a stress fracture in his rib, a month out from the French Open where the Spaniard will bid for a record-extending 14th title.
Bopanna had won this event with compatriot Divij Sharan in 2019.
Belinda Bencic of Switzerland and Danielle Collins were among those to win their first-round matches at the Adelaide International
Ramkumar Ramanathan partnered with American Hunter Reese won his first main draw win at a Grand Slam at Rolland Garros on Wednesday
Men's singles winner set to receive five times more the amount as compared to the women's champion.
Russia's invasion of Ukraine was condemned by the sporting community on Thursday, with President Vladimir Putin's country losing hosting rights for the UEFA Champions League final while Formula One drivers said it was "wrong" to race there this year.
Novak Djokovic cruised through his first singles match in Australia since being deported last year.
Walking out of the outside courts at the Balewadi stadium, his gait was assuring as he uttered, "no more singles for me".
Federer, Nadal and Djokovic had made it near impossible for their peers to live, and thrive, amongst them. But the coming generation, which hasn't been as scarred by defeat at the hands of the Big 3, may make tennis unpredictable again.
The Maharashtra Open in Pune and the Rio Open in Brazil, that precedes the Australian Open, will be rescheduled.
Factbox on Daniil Medvedev, who defeated world number one Novak Djokovic 6-4, 6-4, 6-4 in the US Open final on Sunday to win his first Grand Slam title.
Third seed Stan Wawrinka was knocked out in the third round of the Paris Masters when he lost 6-7(2), 7-5, 7-6(3) against South African Kevin Anderson on Thursday, suffering his fourth defeat in five matches.
Djokovic said the Spaniard remains his biggest rival.
Norrie's semi-final opponent will be another American, fourth-seeded Tommy Paul, who crushed Stefan Kozlov 6-3, 6-1 in an all-US matchup.
The Serbian top seed won a fourth successive title at the All England Club to take his overall Grand Slam tally to 21.
'The fact that I wasn't playing for several months beginning of last year allowed me to really get together with my team and work on my body, on my strokes, which has later helped me to achieve some great results.'
The world number five Spaniard has won 15 straight matches since returning from a foot issue that sidelined him for nearly six months last year.
The grasscourt major will be held from June 27 to July 10.
IMAGES from Day 5 of the French Open at Roland Garros in Paris on Thursday.