Serena and Venus Williams have been given a wildcard entry for the women's doubles at the Cincinnati Open. It could also pave the way for Serena to return to play in the US Open this year. She is currently one short of the all-time record of 24 Grand Slam singles titles, jointly held by Margaret Court and Novak Djokovic. Together, Venus and Serena have won 14 major titles and three Olympic gold medals in doubles. Venus, 46, has also received a wildcard into the singles draw of the tournament in Cincinnati.