Li Na (31 years 10 months)
British legend Virginia Wade held the record for the oldest grand slam winner for 13 years. She won Wimbledon in 1977 at the age of 31.
Virginia Wade (31 years 11 months)
Flavia Pennetta shocked everyone by winning the 2015 US Open which is the only major title of her career. She won the major aged 33.
Flavia Pennetta (33 years 6 months)
Martina Navratilova become the oldest grand slam champion when she won Wimbledon in 1990 aged 33. This was her 18th and final major title.
Martina Navratilova (33 years 8 months)
By winning the 2017 Australian Open, Serena Williams won her record 23rd major title and in doing so, also became the oldest grand slam champion at 35.
Serena Williams (35 years 4 months)