Lesser known Sara Errani, an Italian who until this week was oblivious on the grand slam radar.
Sharapova won her first career grand slam in 2004 when she won the Wimbeldon.
Errani's tale is far less familiar; she's not even all that famous in Italy. Until a quarter-final run at this year's Australian Open, Errani never had been past the third round at a Grand Slam tournament.
6-foot-2 Sharapova, a three-time major champion will be standing across the net at Roland Garros with the title at stake.
Sara Errani, was 12 years old, she struck out on her own, leaving behind her family in Italy and heading off to Nick Bollettieri's famed tennis academy in Florida.
Sharapova had a career threatening shoulder injury in 2008, but she has made a strong comeback after the surgery.
25-year-old, Errani until this week was 0-28 against players ranked in the top 10. Now she's 2-28, thanks to victories over No. 6 Sam Stosur in the semi-finals, and No. 10 Angelique Kerber in the quarter-finals. Those upsets followed wins over two past French Open champions, 2008's Ana Ivanovic and 2009's Svetlana Kuznetsova.
Errani had never made it past the third round at any grand slam event before this year's Australian Open, where she reached the quarter-finals.
While Sharapova is assured of returning to No. 1 in the rankings by virtue of reaching her first French Open final, Errani is guaranteed to move into the top 10 for the first time.
And while Sharapova can become the 10th woman to complete a career Grand Slam, Errani has a chance to forever be known as a Grand Slam singles champion.
If she wins today's match Sharapova can become the 10th woman to complete a career Grand Slam.
If she does the final against the current world no. 1 Errani will almost have a perfect fairytale to narrate as she also won the women's doubles at the French Open this year with her partner Roberta Vinci.
The stakes couldn't be any higher for Sharapova, she last held the world no.1 position in 2008, before a shoulder injury nearly wrecked her career.
Aside from being a tennis ace Sharapova is also hugely popular for her stunning looks and perfect athletic body.
Sharapova will start as a strong favorite and if she can reproduce the kind of form she showed against Wimbledon champion Kvitova, Errani could struggle to counter her power.
Maria Sharapova, a global superstar has entered the final of the Frech Open. Victory for Sharapova, who regained the world No.1 ranking by reaching the final, would make her only the 11th woman to win all four grand slam titles.
The only grand slam that Sharapova hasn't won is the French Open.
On the verge of making history this will be a big match for two of them.
The contrast in their game and style is very evident and will be witnessed when Maria Sharapova takes on Sara Errani in the women's final at Roland Garros today.
All of 5 feet-4 and a half inches, Errani lacks the natural physical assets of Sharapova but her choice of shot, her tactical awareness has helped her reach the final.