From MN's wikipage, in case the Guardian is having a tough time with research.
Recognition
In 2005, Tennis magazine selected her as the greatest female tennis player for the years 1965 through 2005, directly over Steffi Graf.[85] Billie Jean King, a former World No. 1 player, said in 2006 that Navratilova is "the greatest singles, doubles and mixed doubles player who's ever lived."[86] In 2008, tennis historian and journalist Bud Collins called Navratilova "arguably, the greatest player of all time."[87]
In 2006, Martina Navratilova was named by Equality Forum as one of their 31 Icons of the LGBT History Month.[88]
Tennis writer Steve Flink, in his book The Greatest Tennis Matches of the Twentieth Century (1999), named her as the second best female player of the 20th century, directly behind Steffi Graf.[89]
In June 2011, she was named one of the "30 Legends of Women's Tennis: Past, Present and Future" by Time.[90]
In March 2012, The Tennis Channel named Navratilova as the second greatest female tennis player of all times, behind Steffi Graf, in their list of 100 greatest tennis players of all times.[91]
On August 2, 2013, Navratilova was among the first class of inductees into the National Gay and Lesbian Sports Hall of Fame.[92]
On May 12, 2016, Navratilova was made an honorary fellow of Lucy Cavendish College of the University of Cambridge.[93]