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Professional tennis player Goncalo Oliveira, who said a kiss caused a positive methamphetamine drug test, was suspended for four years by the International Tennis Integrity Agency on Friday.

Aryna Sabalenka extended her winning streak at Wuhan to 20 matches with a 6-3, 6-3 victory over eighth-seeded Elena Rybakina on Friday to reach the semifinals of the WTA 1000-level tournament.

- Novak Djokovic had a relatively straightforward victory at the Shanghai Masters for a change as he beat unseeded Zizou Bergs 6-3, 7-5 Thursday to reach the semifinals, where he will face No. 204-ranked qualifier Valentin Vacherot from Monaco.

US Open champion Aryna Sabalenka's winning streak at the Wuhan Open rolled on to 19 matches when she beat Liudmila Samsonova 6-3, 6-2 to advance to the quarterfinals of the WTA 1000-level tournament.

After becoming the third player this season to win 50 tour-level games, Alex De Minaur advanced to the Shanghai Open quarterfinals and will face Daniil Medvedev, who beat Learner Tien to move on.

Tennis players involved in doping or match-fixing investigations are now eligible for free legal help, confidential counseling or money to test products they have taken that might have led to a positive drug test, the ITIA announced.

Jessica Pegula was twice broken while serving for the match in the third set but recovered in a tight tiebreaker, while Coco Gauff breezed into the next round at the Wuhan Open.

Novak Djokovic needed medical attention after losing the second set but recovered to beat Jaume Munar 6-3, 5-7, 6-2 in hot and humid conditions at the Shanghai Masters on Tuesday.

Jack Draper will work with Andy Murray's former coach Jamie Delgado in a major change to his team.

Carlos Alcaraz will headline a new "One Point Slam" at this year's Australian Open, organisers announced on Tuesday, which will see 10 amateurs go head-to-head with 22 professionals.