The International Tennis Federation Asia Under-14 Development Championship will get underway on Sunday at the Sheikh Jamal National Tennis Complex in Ramna with 34 players from 10 countries taking part in the competition.

Former world number one Daniil Medvedev set up an Adelaide International semi-final against either Novak Djokovic or Denis Shapovalov Friday with a command performance in the countdown to the opening Grand Slam of the year.

Iga Swiatek was left in tears after Jessica Pegula stunned the world number one on Friday to give the United States a 1-0 lead over Poland in the semi-finals of the inaugural United Cup.

Novak Djokovic said "it is what it is" Thursday as he faced the prospect of missing more tournaments in the United States over his refusal to have a coronavirus shot.

Novak Djokovic battled back from 5-2 down in the first set to beat Quentin Halys 7-6(3), 7-6(5) and move into the Adelaide International 1 quarter-finals on Thursday.

Former world number one Daniil Medvedev locked in an all-Russian Adelaide International quarter-final with Karen Khachanov Wednesday, while Aryna Sabalenka stormed back to book her place in the last eight.

Novak Djokovic swept to victory in his first singles match on Australian soil since being deported a year ago, crushing Constant Lestienne at the Adelaide International on Tuesday to kick-start his bid for another Grand Slam title.

Tennis fans gave Novak Djokovic a raucous welcome during his first match in Australia in almost two years when he made a rare doubles appearance at the Adelaide International on Monday.

Tennis legend Martina Navratilova says she is hoping for a  “favourable outcome” after being diagnosed with breast and throat cancer.

World number two Rafael Nadal slumped to a second-straight defeat at the United Cup Monday in a setback to his Australian Open preparations, but Stefanos Tsitsipas and Iga Swiatek were both on song.

Tennis fans gave Novak Djokovic a raucous welcome during his first match in Australia in almost two years when he made a rare doubles appearance at the Adelaide International on Monday.

Rafa Nadal brushed off talk of retiring anytime soon after the 22-times Grand Slam champion was stunned by Cameron Norrie in the United Cup mixed team tournament on Saturday, saying he still enjoyed competing at the highest level.

This year, the sporting world has seen it all.

Rafael Nadal lost his opening match of the season Saturday in the countdown to the defence of his Australian Open title, but women's world number one Iga Swiatek cruised to victory at the United Cup.

Nick Kyrgios said he withdrew from the inaugural edition of the United Cup to be in peak condition for next month's Australian Open, adding that he did not expect everyone to understand the reasoning behind his decision.

Novak Djokovic admitted Thursday that being deported from Australia was an experience he will never forget, but it was time to move on, as he enjoyed a warm welcome in Adelaide.

A “highly motivated” Rafael Nadal welcomed rival Novak Djokovic’s much-anticipated return to the Australian Open as “good for tennis” Wednesday, while brushing off suggestions this may be his last tilt at the season-opening Grand Slam.

World number one Iga Swiatek said Wednesday she will put a breakthrough 2022 season behind her to concentrate on staying at the pinnacle of the women's game.

A "highly motivated" Rafael Nadal welcomed rival Novak Djokovic's much-anticipated return to the Australian Open as "good for tennis" Wednesday, while brushing off suggestions this may be his last tilt at the season-opening Grand Slam.

Novak Djokovic and Rafael Nadal kickstart their 2023 campaigns this week in Adelaide and Sydney respectively, with the superstar veterans and great rivals eyeing up yet more Australian Open glory.