Veteran American is back in the WTA top 20.
Serena Williams has retained her position at the top of the WTA rankings ahead of both Victoria Azarenka and Maria Sharapova, while her elder sister Venus has also made a return to the top 20.
Venus, 32, climbed to 20th spot, despite not winning more points, as Germany’s Julia Goerges dropped to 24th.
In other movements, former world no.1 Jelena Jankovic, of Serbia, rose three places to 21st after winning the Bogota Open on Sunday — her first victory since 2010 and the 13th of her career.
In the top 10, Czech player Petra Kvitova jumped one place to seventh after her victory in Dubai against Italy’s Sara Errani, who dropped to eighth.