Issue link: http://itf.uberflip.com/i/626056
60 The following additional players have held the four Grand Slam titles at the same time but not in one calendar year: SINGLES SINGLES SINGLES SINGLES 1983-84 Martina Navratilova (USA) Six titles: Wimbledon 1983 – US Open 1984 1993-94 Steffi Graf (GER) Four titles: Roland Garros 1993 – Roland Garros 1994 2002-03 Serena Williams (USA) Four titles: Roland Garros 2002 – Australian Open 2003 2014-15 Serena Williams (USA) Four titles: US Open 2014 – Wimbledon 2015 DOUBLES DOUBLES DOUBLES DOUBLES 1949-50 Louise Brough (USA) Four titles: French Championships 1949 – Australian Championships 1950 (partnered by Margaret duPont (USA) and Doris Hart (USA)) 1986-87 Martina Navratilova (USA)* / Pam Shriver (USA) Four titles: Wimbledon 1986 – Roland Garros 1987 (*Navratilova also won 1986 Roland Garros with Andrea Temesvári (HUN)) 1992-93 Gigi Fernández (USA) / Natasha Zvereva (BLR) Six titles: Roland Garros 1992 – Wimbledon 1993 1996-97 Natasha Zvereva (BLR) Four titles: US Open 1996 - Wimbledon 1997 (partnered by Gigi Fernández (USA) and Martina Hingis (SUI)). 2009-10 Serena Williams (USA) / Venus Williams (USA): Four titles: Wimbledon 2009 – Roland Garros 2010 2012-13 Bob Bryan (USA) / Mike Bryan (USA): Four titles: US Open 2012 - Wimbledon 2013 MIXED DOUBLES MIXED DOUBLES MIXED DOUBLES MIXED DOUBLES 1967-68 Billie Jean King (USA) Four titles: French Championships 1967 – Australian Championships 1968 (partnered by Dick Crealy (AUS) and Owen Davidson (AUS)).