In a battle of former Top 10 players, Sharapova’s serve faltered early in the match but she regained composure to take the first set, cheered on by the spirited crowd at the Shenzhen Longgang Sports Center.

Bacsinszky put up a strong fight in the second set, claiming the first two games and forcing Sharapova to step up her game.

The Russian powered through to take the match in one hour 42 minutes.

“It’s been a few months since I’ve been out of playing competitively,” Sharapova said in a post-match interview, calling Shenzhen a “warm-up tournament” for next month’s Australian Open.

“Considering the opponent and everything I had to go through today I think it was great practice for me.”

Sharapova, who won the last of her five Slams at Roland Garros in 2014, has endured a disappointing return to the majors since the end of her drugs ban in April of 2017.

She will next face 17-year-old Chinese wild card Wang Xinyu.

Meanwhile, France’s Caroline Garcia lost in straight sets to Serbia’s Ivana Jorovic 6-4, 6-2.

The tournament, which runs until Saturday, will see players battling for US$750,000 in prize money.