Serena Williams announces she will retire soon, says she is ‘evolving away from tennis’

Serena Williams, of the U.S., seventh seed, holds the trophy following her women's singles final victory over compatriot Lindsay Davenport, top seed, at the Australian Open in Melbourne, Australia, Saturday, Jan. 29, 2005. (AP)

Serena Williams holds her daughter Alexis Olympia Ohanian Jr. after showing her clothing line during New York's Fashion Week in New York. (AP)

Serena Williams of the U.S. returns in the final of the French Open tennis tournament against Lucie Safarova of the Czech Republic at the Roland Garros stadium, in Paris, France, Saturday, June 6, 2015. (AP)

FILE - Serena Williams, of the U.S., celebrates as she defeats Russia's Maria Sharapova during the women's final match of the French Open tennis tournament at Roland Garros stadium Saturday, June 8, 2013 in Paris. (AP)

Serena Williams, of the United States, holds the trophy after defeating Maria Sharapova, of Russia, in the women's singles final at the Australian Open tennis championship in Melbourne, Australia, Jan. 31, 2015.

Serena Williams, of the United States, hugs the championship trophy after defeating Caroline Wozniacki, of Denmark, during the championship match of the 2014 U.S. Open tennis tournament, Sunday, Sept. 7, 2014, in New York.

Serena Williams, of the United States celebrates a point against compatriot Christina McHale during their women's singles match on day five of the Wimbledon Tennis Championships in London, Friday, July 1, 2016. (AP)

Serena Williams of the United States celebrates with the trophy after defeating Agnieszka Radwanska of Poland to win the women's final match at the All England Lawn Tennis Championships at Wimbledon, England, Saturday, July 7, 2012.