Her list of achievements is phenomenal.
It was Williams's first loss in the Fed Cup.
In 2000 the Williams sisters faced each other in a Grand Slam Tournament in a semifinal match at Wimbledon, the first time the sisters had faced each other in this setting.
Williams was also the World Champion in both the singles and doubles events.
The win ensured her return to the No.
However, Andreescu was able to hold serve and break Williams to win the title in straight sets.
Many commentators, players and sports writers regard Williams as the greatest woman tennis player of all time.
With a world ranking at the time of 181, many felt that the decision showed bias and favored Williams unduly.