Tennis Hall of Famer Martina Hingis plans to come out of retirement and play doubles at the Southern California Open.
Hingis will play with Daniela Hantuchova of Slovakia.
The 32-year-old Hingis will be making her first WTA tournament appearance since September 2007.
The former No. 1 player in the world was often troubled by foot injuries. She retired for the second time in 2007, when she drew a two-year suspension for testing positive for cocaine at Wimbledon. Hingis denied taking the drug but did not appeal the ruling.
Hingis won 43 career WTA singles titles, including five Grand Slam singles championships and 37 career WTA doubles titles, including nine Grand Slam doubles championships.