Serena Williams is a competition winner.
Serena Williams . She is the only tennis player in history ( man or woman ) to have won singles titles at least six times in three of the four Grand Slam tournaments , and the only player ever to have won two of the four Grand Slams seven times each ( seven Wimbledon titles and seven Australian Open titles ) . She also holds an all-time record for the most singles matches won at the Grand Slams ( man or woman ) with 316 matches ( through the 2017 Australian Open ) .