![Angelique Kerber vs. Kiki Bertens | 2018 WTA Finals Singapore Round Robin | WTA Highlights - YouTube Angelique Kerber vs. Kiki Bertens | 2018 WTA Finals Singapore Round Robin | WTA Highlights - YouTube](https://i.ytimg.com/vi/qbuma-h7KRs/maxresdefault.jpg)
Angelique Kerber vs. Kiki Bertens | 2018 WTA Finals Singapore Round Robin | WTA Highlights - YouTube
![Kiki Bertens of the Netherlands celebrates after defeating Czech player Barbora Krejcikova during their final match at the WTA tennis tournament in Nuremberg, Germany, Saturday, May 27, 2017. (Daniel Karmann/dpa via AP Kiki Bertens of the Netherlands celebrates after defeating Czech player Barbora Krejcikova during their final match at the WTA tennis tournament in Nuremberg, Germany, Saturday, May 27, 2017. (Daniel Karmann/dpa via AP](https://c8.alamy.com/comp/2NYTB54/kiki-bertens-of-the-netherlands-celebrates-after-defeating-czech-player-barbora-krejcikova-during-their-final-match-at-the-wta-tennis-tournament-in-nuremberg-germany-saturday-may-27-2017-daniel-karmanndpa-via-ap-2NYTB54.jpg)
Kiki Bertens of the Netherlands celebrates after defeating Czech player Barbora Krejcikova during their final match at the WTA tennis tournament in Nuremberg, Germany, Saturday, May 27, 2017. (Daniel Karmann/dpa via AP
![Kiki Bertens of the Netherlands returns a shot to Angelique Kerber of Germany during their women's singles match at the WTA tennis tournament in Singapore on Monday, Oct. 22, 2018. (AP Photo/Vincent Kiki Bertens of the Netherlands returns a shot to Angelique Kerber of Germany during their women's singles match at the WTA tennis tournament in Singapore on Monday, Oct. 22, 2018. (AP Photo/Vincent](https://c8.alamy.com/comp/2MMA9N2/kiki-bertens-of-the-netherlands-returns-a-shot-to-angelique-kerber-of-germany-during-their-womens-singles-match-at-the-wta-tennis-tournament-in-singapore-on-monday-oct-22-2018-ap-photovincent-thian-2MMA9N2.jpg)
Kiki Bertens of the Netherlands returns a shot to Angelique Kerber of Germany during their women's singles match at the WTA tennis tournament in Singapore on Monday, Oct. 22, 2018. (AP Photo/Vincent
![Marketa Vondrousova powers past No. 13 Kiki Bertens in a see-saw thriller - Official Site of the 2023 US Open Tennis Championships - A USTA Event Marketa Vondrousova powers past No. 13 Kiki Bertens in a see-saw thriller - Official Site of the 2023 US Open Tennis Championships - A USTA Event](https://photo-assets.usopen.org/images/pics/large/f_USTA1035352_20180901_Day6_GE2_0817.jpg)