| Australian Open Women | 01/25 10:20 | 25 | [73] Zarina Diyas v Kiki Bertens [10] | 2-6,6-7 | |
| Australian Open Women | 01/23 05:45 | 24 | [163] Arina Rodionova v Kiki Bertens [10] | 3-6,5-7 | |
| Australian Open Women | 01/21 07:40 | 23 | [105] Irina-Camelia Begu v Kiki Bertens [10] | 1-6,4-6 | |
| WTA Adelaide | 01/14 00:30 | 25 | Kiki Bertens v Maria Sakkari | Cancelled | |
| WTA Brisbane | 01/10 04:30 | 27 | [9] Kiki Bertens v Naomi Osaka [4] | 3-6,6-3,3-6 | |
| WTA Brisbane | 01/09 11:35 | 26 | [9] Kiki Bertens v Anett Kontaveit [26] | 6-3,2-6,7-5 | |
| WTA Brisbane | 01/07 05:50 | 25 | [9] Kiki Bertens v Dayana Yastremska [22] | 6-4,1-6,6-3 | |
| WTA Finals | 10/31 12:15 | 3 | [10] Kiki Bertens v Belinda Bencic [7] | Retired | |
| WTA Finals | 10/29 10:30 | 2 | [1] Ashleigh Barty v Kiki Bertens [10] | 6-3,3-6,4-6 | |
| WTA Zhuhai | 10/27 05:00 | 29 | [10] Kiki Bertens v Aryna Sabalenka [14] | 4-6,2-6 | |
| WTA Zhuhai | 10/26 07:00 | 28 | [10] Kiki Bertens v Saisai Zheng [40] | 2-6,6-3,6-4 | |
| WTA Zhuhai | 10/24 11:00 | 3 | [10] Kiki Bertens v Dayana Yastremska [24] | 6-4,6-3 | |
| WTA Zhuhai | 10/22 07:45 | 1 | [10] Kiki Bertens v Donna Vekic [20] | 7-6,6-2 | |
| WTA Moscow | 10/18 09:00 | 27 | [45] Kristina Mladenovic v Kiki Bertens [8] | 6-4,2-6,6-1 | |
| WTA Moscow | 10/17 08:00 | 26 | [109] Kaia Kanepi v Kiki Bertens [8] | 6-4,3-6,5-7 | |
| WTA Linz | 10/11 13:25 | 27 | [8] Kiki Bertens v Cori Gauff [110] | 6-7,4-6 | |
| WTA Linz | 10/10 17:05 | 26 | [8] Kiki Bertens v Alison Van Uytvanck [44] | 4-6,6-3,6-3 | |
| WTA Linz | 10/09 16:30 | 25 | [8] Kiki Bertens v Misaki Doi [74] | 6-4,7-5 | |
| WTA Linz | 10/08 09:00 | 25 | Kiki Bertens v Anastasia Pavlyuchenkova | Cancelled | |
| WTA Beijing | 10/05 06:30 | 28 | [1] Ashleigh Barty v Kiki Bertens [8] | 6-3,3-6,7-6 | |
| WTA Beijing | 10/04 06:45 | 27 | [3] Elina Svitolina v Kiki Bertens [8] | 6-7,2-6 | |
| WTA Beijing | 10/02 12:05 | 26 | [51] Polona Hercog v Kiki Bertens [8] | 6-7,6-2,3-6 | |
| WTA Beijing | 09/30 06:00 | 25 | [26] Dayana Yastremska v Kiki Bertens [8] | 6-7,3-6 | |
| WTA Beijing | 09/28 07:50 | 24 | [23] Donna Vekic v Kiki Bertens [8] | 6-3,1-6,6-7 | |
| WTA Wuhan | 09/25 06:00 | 26 | [14] Aryna Sabalenka v Kiki Bertens [8] | 6-1,7-6 | |
| WTA Wuhan | 09/24 10:10 | 25 | [81] Bernarda Pera v Kiki Bertens [8] | 6-3,4-6,2-6 | |
| WTA Osaka | 09/19 08:30 | 26 | [41] Anastasia Pavlyuchenkova v Kiki Bertens [8] | 6-1,7-5 | |
| WTA Zhengzhou | 09/13 03:00 | 26 | [8] Kiki Bertens v Ajla Tomljanovic [46] | 4-6,6-7 | |
| US Open Women | 08/31 16:45 | 25 | [30] Julia Goerges v Kiki Bertens [7] | 6-2,6-3 | |
| US Open Women | 08/29 20:30 | 24 | [45] Anastasia Pavlyuchenkova v Kiki Bertens [7] | 5-7,4-6 |
Wikipedia - Kiki Bertens
Kiki Bertens (Dutch pronunciation: [ˈkiki ˈbɛrtəns]; born 10 December 1991) is a Dutch former professional tennis player. Her career-high WTA singles ranking was world No. 4, which she reached on 13 May 2019, becoming the highest-ranked Dutch female player ever. Her career-high doubles ranking of world No. 16, she achieved in April 2018. She won ten singles and ten doubles titles on the WTA Tour including 2018 Cincinnati Open and 2019 Madrid Open. Bertens was widely regarded as a clay court specialist, but also was successful on hardcourt.