From Martina Navratilova to Venus Williams, some of tennis' greatest legends have extended their careers into their 40s.

Before new winners are crowned, check out all-time men's and women's singles champions from the US Open below: *Women's US Open tournament started in 1887. 2024: Jannik Sinner, Aryna Sabalenka ...

Jimmy Connors and Andre Agassi locked horns in the quarterfinals of the 1989 US Open. The 19-year-old Agassi was seeded sixth at the tournament while the 36-year-old Connors was the 13th seeded.