India's Commonwealth Games weightlifting gold medal winner Ravi Kumar Katulu has been banned for four years after failing a drug test, a top anti-doping official told AFP on Tuesday.

The International Olympic Committee has lifted a doping ban against Russia, restoring the country's rights in full, Russian officials said on Wednesday.

Five-time Grand Slam winner Maria Sharapova was made to fight by 102nd-ranked teenager Aryna Sabalenka at the Tianjin Open on Sunday before winning her first title since her 15-month doping ban.

Maria Sharapova returns from a 15-month doping ban on Wednesday with promoters of the Stuttgart tournament drooling over profit margins while rivals condemn the smooth road prepared for the Russian's rehabilitation.

Indian wrestler Narsingh Yadav was handed a four-year doping ban on Thursday after the World Anti-Doping Agency won its appeal against his earlier exoneration.