20 Key Moments For The One And Only Serena Williams

No matter what happens at next week's French Open -- or at any other tournament from now through eternity -- Serena Williams' career will live in the history books. The 33-year-old American has won 66 titles, 19 majors and more than $67.5 million in prize money. Here are 20 defining moments in her career as she prepares to go for major No. 20 at Roland Garros.

1. Oct. 28, 1995

A 14-year-old Serena Williams makes her professional debut in Canada. She loses 6-1, 6-1 to 18-year-old American Annie Miller.

2. March 14, 1999

Serena Williams beats Steffi Graf 6-3, 3-6, 7-5 in the final at Indian Wells. It is the last time the two legends play each other, and the series finishes 1-1. Graf, who retired later that year, holds the record for major titles in the Open era, with 22.

3. Sept. 11, 1999

At just 17, Serena Williams wins her first Grand Slam title by beating top-seeded Martina Hingis 6-3, 7-6 (4) in the final of the US Open. Williams becomes the first African-American woman to win the US Open since Althea Gibson went back to back in 1957 and '58.

4. March 17, 2001

Serena Williams gets booed during her championship match against Kim Clijsters at Indian Wells amid accusations of match-fixing in the Williams camp. Venus Williams had defaulted minutes before in her semifinal match against Serena.

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The infamous "cat suit."

5. Aug. 26, 2002

Serena Williams announces she will be a fashion force as well as a tennis force by wearing a one-piece black "cat suit" from Puma en route to the US Open championship, her fourth major title.

6. Jan. 25, 2003

Serena Williams beats her sister, Venus Williams, 7-6 (4), 3-6, 6-4 in the final of the Australian Open to complete the "Serena Slam" -- holding all four major trophies at the same time. The feat is often referred to as the "Sister Slam" because Serena beat Venus in the final in each of those majors.

7. July 10, 2006

With a knee injury limiting her schedule, Serena Williams falls to No. 140 in the world rankings, her lowest position since 1997.

8. July 4, 2009

Serena Williams beats her sister 7-6 (3), 6-2 in the Wimbledon final to claim her 11th Grand Slam title. The sisters have not met in a major since. Serena owns a 6-2 record over Venus in Grand Slam finals and a 14-11 record overall.

9. Sept. 12, 2009

Serena Williams threatens an umpire at the US Open after being called for a foot fault in her semifinal loss to Kim Clijsters. Williams is assessed a point penalty, which comes on match point and creates one of the most bizarre endings to a tennis match ever. Williams is fined a total of $92,500.

10. Jan. 30, 2010

Serena Williams beats Justine Henin 6-4, 3-6, 6-2 in the final of the Australian Open to tie Billie Jean King with 12 major singles titles. Williams is presented the winner's trophy by Margaret Court, who owns the all-time majors record with 24.

11. July 7, 2010

Days after winning her 13th major at Wimbledon, Serena Williams steps on broken glass and severs a tendon in her foot. The injury requires two surgeries.

12. Feb. 19, 2011

Serena Williams is hospitalized in Los Angeles after developing a pulmonary embolism. Later that month, she requires emergency treatment for a hematoma in her stomach that likely developed as a result of her use of blood thinners.

13. Sept. 11, 2011

Serena Williams lashes out at an umpire at the US Open after being called for hindrance during her loss to Sam Stosur in the final. She is later fined $2,000.

14. July 7, 2012

Serena Williams wins her fifth Wimbledon singles title and ties her sister for success on the revered green grass with a 6-1, 5-7, 6-2 victory over Agnieszka Radwanska. Later that day, Serena and Venus win their 13th major doubles title, the most recent major they've won together.

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Serena Williams joined Steffi Graf, Andre Agassi and Rafael Nadal as the only winners of the Golden Slam.

15. Aug. 4, 2012

Serena Williams completes the Golden Slam by claiming the women's singles gold medal at the London Olympics with a 6-0, 6-1 win over Maria Sharapova.

16. Feb. 18, 2013

Serena Williams, 31, becomes the oldest female tennis player to be ranked No. 1 in the world.

17. June 9, 2013

Serena Williams wins her 16th Grand Slam singles title and second French Open with a 6-4, 6-4 win over Maria Sharapova.

18. Sept. 7, 2014

Serena Williams beats Caroline Wozniacki 6-3, 6-3 in the final of the US Open to tie Chris Evert and Martina Navratilova for fourth on the all-time majors list with 18.

19. Jan. 31, 2015

Serena Williams beats Maria Sharapova 6-3, 7-6 (5) in the Australian Open final to win her 19th major title. It is her 16th straight win over Sharapova.

20. March 13, 2015

Serena Williams returns to Indian Wells for the first time since 2001, receives a warm welcome from the crowd and wins her first match back 7-5, 7-5 over Monica Niculescu. "Just being here is a huge win," Williams said. "Not only for me but for so many people. It's a wonderful feeling."

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