Premise: Serena Williams . Her total of 23 Grand Slam singles titles marks the record for the most Grand Slam wins by a tennis player in the Open Era , and is second on the all-time list behind Margaret Court ( 24 ) . 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 is also the only tennis player to have won 10 Grand Slam singles titles in two separate decades . She has won an all-time record of 13 Grand Slam singles titles on hardcourt . 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 ) .
Hypothesis: Serena Williams is a competition winner.
Label: ENTAILMENT