(CNN)Here's a look at the life of professional tennis player Serena Williams, currently ranked number one in the world.
Birth date: September 26, 1981
Birth place: Saginaw, Michigan
Birth name: Serena Jameka Williams
Father: Richard Williams, tennis coach
Mother: Oracene Price
Currently ranked the Women's Tennis Association's (WTA) number one in the world.
Has won 68 career singles titles, 22 doubles titles and two mixed doubles titles. This includes 36 Grand Slam titles - 21 singles titles, 13 doubles titles and two mixed doubles titles.
Four-time Olympic gold medalist.
Has won more than $72 million in career prize money, more than any other female athlete.
Is fifteen months younger than sister and tennis pro Venus Williams.
Is a Jehovah's Witness.
September 1995 - Turns professional, losing her debut tennis match at the Bell Challenge in Quebec.
January 1998 - Enters the Australian Open, her first Grand Slam tournament. She loses to her sister, Venus, in the second round, 6-7, 1-6.
1999 - Enrolls at the Art Institute of Fort Lauderdale in Florida for fashion design.
September 12, 1999 - Wins the U.S. Open, becoming the first Williams sister to win a Grand Slam.
July 8, 2002 - Ranked Women's Tennis Association (WTA) world number 1 for the first time in her career, at age 20.
August 1, 2003 - Has surgery to repair a partially torn tendon in her left knee.
September 14, 2003 - Williams' older half-sister, Yetunde Price, is murdered in Compton, California.
2004 - Launches "Aneres" clothing line (Serena spelled backwards).
2008 - Establishes the Serena Williams Foundation, to assist American youth touched by violent crime and also underprivileged children around the world.
September 12, 2009 - Williams goes on a profanity-laced outburst against a line judge who calls her for a foot fault in the U.S. Open semifinals against Kim Clijsters. Clijsters is awarded a penalty point to win the match. The Grand Slam committee later fines Williams a record $82,500 and places her on probation for the next two years.
July 7, 2010 - Receives stitches in both her feet after stepping on broken glass while leaving a restaurant in Munich. Later, she has to have surgeries in July and October to repair a lacerated tendon on her right foot.
February 18, 2013 - At age 31, becomes the oldest female tennis player to be ranked number 1 since computer rankings began in 1975. This is the sixth time in her career to be ranked number one.
September 7, 2014 - Williams wins her third consecutive U.S. Open title.
June 6, 2015 - Williams wins the French Open, her 20th victory in a major tournament.
July 11, 2015 - Williams wins the Wimbledon title for the 6th time, and is now on track for a calendar Grand Slam which has not been done since Steffi Graf in 1988. This win is her 21st victory in a major tournament, and puts her one major tournament win away from tying Steffi Graf for most singles titles in the Open era.
September 11, 2015 - Williams is upset by Italian Roberta Vinci in the U.S. Open semifinals. The loss thwarts her chances of a Grand Slam - winning all four majors in one season, and of tying Steffi Graf's record of 22 major titles.