Tennis champion Martina Navratilova proposed to her long-term girlfriend on a big screen at the U.S. Open tournament on Saturday (06Sep14).

The former world number one tennis player asked her girlfriend Julia Lemigova to marry her in front of a large crowd which had just finished watching Novak Djokovic's semi-final match.

The 57 year old appeared on the screen at the Arthur Ashe Stadium in New York and the Russian model said yes to rounds of cheers and applause.

Afterwards, Navratilova said, "I have been waiting for the right time to ask Julia to marry me... I thought this was the right place and the right time to pop the question and thankfully I got a 'yes'."

The couple has been dating for six years.