On the court, Serena Williams is a 23-time singles grand slam champion, a four-time Olympic gold medalist and one of tennis' most dominant players. Off it, she's become an active businesswoman.
Williams has her own fashion line called S by Serena, endorsement deals with well-known companies like Beats by Dre and Nike and serves on the board of directors for Poshmark and Momentive, the parent company of SurveyMonkey.
Now, Williams has plans to expand her portfolio. On April 21, the seven-time Wimbledon champion and Formula 1 racer Lewis Hamilton joined former Liverpool chairman Martin Broughton's bid to buy Chelsea.