Serena Williams wins opening match at Sony OpenThe top-ranked Williams seeks a record seventh Key Biscayne title, and her second in a row.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceSerena Williams wins opening match at Sony OpenThe top-ranked Serena Williams seeks a record seventh Key Biscayne title, and her second in a row :: Al Bello/Getty Images The top-ranked Williams seeks a record seventh Key Biscayne title, and her second in a row. Add us as a preferred source on GoogleFollowPublished Mar 21, 2014 | Modified Mar 21, 2014SI STAFFShare on FacebookShare on XHome/Tennis