Elena Rybakina won her third WTA Tour title of the year when she defeated Marta Kostyuk in the Porsche Tennis Grand Prix final on Sunday.
Danielle Collins secured back-to-back WTA Tour titles when she defeated Daria Kasatkina 6-2 6-1 in the Charleston Open final on Sunday.
The WTA has announced that Riyadh, Saudi Arabia will be hosting the next three editions of the WTA Finals.
Danielle Collins produced a fairytale ending to her first WTA 1000 final in her last year on tour by beating Elena Rybakina to win the Miami Open.
World number four Elena Rybakina admitted she was not at her best after beating no. 27 seed Victoria Azarenka 6-4 0-6 7-6 (2) to advance to her second straight Miami Open final.
British number one Katie Boulter was eliminated from the Miami Open by Victoria Azarenka, who clinched a straight-sets victory to advance to the quarter-finals.