Superb Serena eyes perfect season Serena Williams returns to Flushing Meadows aiming to become only the fourth woman to claim a calendar Grand Slam – winning all four major titles in a single season. Victory would also bring her a record seventh U.S. Open title GRAND SLAM TITLES (Open era) 1988 Steffi Graf Only player to have won Golden Grand Slam – winning all four majors, plus Olympic title in Seoul. Last player to achieve feat 1970 Margaret Court: Aged 28, became first woman to clinch calendar Grand Slam in Open Era, with powerful, athletic game 1953 Maureen Connolly: In first year she played all four tournaments, “Little Mo”, 18, dropped only one set throughout CALENDAR GRAND SLAM WINNERS Australian Open Roland Garros Wimbledon U.S. Open Total Graf Williams Evert Navratilova Court Seles King Victory for Williams would equal Graf’s record, and set up chance for outright record in 2016 Source: WTA Pictures: Getty Images