This is a list of the main career statistics of professional American tennis player Serena Williams. Àdàkọ:Performance key Current through 2015 Australian Open. (*) WTA Tier I held until 2008 (8, 9 or 10 tournaments per year), after this split up between Premier Mandatory (4 per year) and Premier 5 tournaments (5 per year) *As of October 27, 2014 Àdàkọ:Serena Williams