She briefly ended her coaching relationship with her mother Melanie early in the year but had a change of heart two months later just before the French Open.
2001 was her least successful year in several seasons, with only three tournament victories in total. 1 ranking for the last time (to Jennifer Capriati) on 14 October 2001.
She then reached the French Open final and was three points away from victory in the second set before losing to Steffi Graf about whom she had said before: "Steffi had some results in the past, but it's a faster, more athletic game now... Her time has passed." She broke into tears after a game in which the crowd had booed her for using underhand serves and crossing the line in a discussion about an umpire decision.
Hingis bounced back to reach her third consecutive US Open final, where she lost to 17-year-old Serena Williams.
1 ranking because of nine tournament championships, including the WTA Tour Championships where she won the singles and doubles titles.
In 2001, Switzerland, with Hingis and Roger Federer on its team, won the Hopman Cup.
In July, she became the youngest singles champion at Wimbledon since Lottie Dod in 1887 by beating Jana Novotná in the final.