Venus Ebony Starr Williams was born on June 17, 1980, in Lynwood, California. On October 31, 1994, she turned pro, something she proved she was more than ready for in her first match. http://www.biography.com/people/venus-williams-9533011#
Serena Williams, born September 26, 1981, in Saginaw, Michigan, began playing tennis early, enduring daily two-hour practices with her father at age three. In 1995, Serena turned pro, and, along with her sister Venus, enjoyed a run of high-profile victories. In 2009, Serena was fined and placed on probation for allegedly threatening a lineswoman, but is doing her best to move past the incident.