In this July 2010 file photo, Serena Williams celebrates winning a point against Russia’s Vera Zvonareva during their women’s singles final at the All England Lawn Tennis Championships at Wimbledon. Williams says she is ready to step away from tennis aer winning 23 Grand Slam titles. Alastair Grant / Associated Press
Howard Fendrich Associated Press Saying “the countdown has begun,” 23-time Grand Slam champion Serena Williams announced Tuesday she is ready to step away from tennis…
