Former World Number 4 Kiki Bertens to Retire at the End of 2021 Season Unknown 05:27 IFTTT, Top Sports News- News18.com Bertens reached her high singles ranking of No. 4 in May 2019. She also has won 10 doubles titles. from Top Sports News- News18.com https://ift.tt/3xsIh8G via IFTTT Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsI-League: Jamie Colado helps East Bengal return to winning waysAustralian Open 2019: Marin Cilic saves match points to reach last 16 in late-night...Sakshi Malik clinches decider as Delhi Sultans win first tie of PWL-4Bundesliga: Goretzka shines as Bayern win at Hoffenheim to cut Dortmund's leadMalaysia Masters: Saina Nehwal downs Nozomi Okuhara to set up semis showdown with...Premier League: Defeat to Chelsea would kill Arsenal's top four bid - Emery