PARIS — Maria Sharapova was not even an adult the last time she beat Serena Williams, it was so long ago.

That was at the WTA Championships, when the Russian was just over 17 1-2 years old. Nearly nine years later, she’ll try to stop Williams from winning her 16th Grand Slam title in the French Open final on Saturday, where Sharapova has to beat overwhelming odds to defend her title.

Williams leads 13-2 against Sharapova and has won their last 12 matches on all surfaces.

“Well, I’d be lying if it doesn’t bother me,” Sharapova said. “I don’t think that it would be a pretty competitive statement if I said (it) didn’t. I would love to change that around.”

Comparing Thursday’s semifinals, the odds of that happening look extremely thin. Williams crushed last year’s finalist Sara Errani 6-0, 6-1, spending nearly three times less on court than Sharapova did in her gritty 6-1, 2-6, 6-4 win against Victoria Azarenka.

“I have never played Maria here,” said Williams, who won her only Roland Garros title 11 years ago when she beat sister Venus in the final. “We’re both really excited to be this far.”

Sharapova beat Williams in the 2004 Wimbledon final, but in their past 11 matches has won a measly total of two sets. One of those was in the final at Key Biscayne, Florida, in March. But you have to go back to April 2008 for the one before.

“Whatever I did in the past hasn’t worked, so I’ll have to try to do something different and hopefully it will,” the 26-year-old Sharapova said. “I don’t feel like I have taken my chances and opportunities.”

They are the top two women in the rankings and seedings.