| WTA Toronto | 08/10 19:35 | 25 | [21] Jil Teichmann v Anett Kontaveit [2] | 6-4,6-4 | |
| WTA Toronto | 08/09 03:30 | 24 | Jil Teichmann v Venus Williams | 6-2,6-3 | |
| WTA San Jose | 07/31 18:50 | 19 | [21] Jil Belen Teichmann v Elizabeth Mandlik [238] | 6-3,3-6,0-6 | |
| WTA San Jose | 07/30 21:55 | 14 | Jil Belen Teichmann v Emiliana Arango | 6-1,7-5 | |
| Wimbledon Women | 06/28 12:20 | 23 | [22] Jil Teichmann v Ajla Tomljanovic [44] | 2-6,3-6 | |
| WTA Eastbourne | 06/21 17:35 | 25 | [23] Jil Teichmann v Harriet Dart [103] | 6-7,6-4,3-6 | |
| WTA Berlin | 06/13 09:00 | 25 | [22] Jil Teichmann v Daria Saville [104] | 7-6,5-7,2-6 | |
| French Open Women | 05/29 17:05 | 26 | [24] Jil Teichmann v Sloane Stephens [64] | 2-6,0-6 | |
| French Open Women | 05/27 13:30 | 25 | [15] Victoria Azarenka v Jil Teichmann [24] | 6-4,5-7,6-7 | |
| French Open Women | 05/25 09:00 | 24 | [172] Olga Danilovic v Jil Teichmann [24] | 4-6,1-6 | |
| French Open Women | 05/22 13:05 | 23 | [116] Bernarda Pera v Jil Teichmann [24] | 2-6,1-6 | |
| WTA Rome | 05/13 17:30 | 27 | [29] Jil Teichmann v Daria Kasatkina [23] | Retired | |
| WTA Rome | 05/12 09:00 | 26 | [29] Jil Teichmann v Elena Rybakina [17] | 6-7,6-3,7-5 | |
| WTA Rome | 05/11 09:00 | 25 | [6] Karolina Pliskova v Jil Teichmann [29] | 2-6,6-4,4-6 | |
| WTA Rome | 05/10 09:00 | 24 | [55] Jasmine Paolini v Jil Teichmann [29] | 3-6,2-6 | |
| WTA Madrid | 05/05 21:05 | 28 | [35] Jil Teichmann v Jessica Pegula [14] | 3-6,4-6 | |
| WTA Madrid | 05/04 15:05 | 27 | [35] Jil Teichmann v Anhelina Kalinina [37] | 6-3,6-4 | |
| WTA Madrid | 05/03 16:45 | 26 | [35] Jil Teichmann v Elena Rybakina [18] | 6-3,6-1 | |
| WTA Madrid | 05/01 13:00 | 25 | [20] Leylah Fernandez v Jil Teichmann [35] | 4-6,4-6 | |
| WTA Madrid | 04/29 09:00 | 24 | [35] Jil Teichmann v Petra Kvitova [30] | 6-3,7-5 | |
| WTA Istanbul | 04/20 14:25 | 26 | [37] Jil Teichmann v Julia Grabher [194] | 4-6,4-6 | |
| WTA Istanbul | 04/19 15:30 | 25 | [37] Jil Teichmann v Greet Minnen [78] | 6-3,6-7,6-3 | |
| WTA Miami | 03/23 19:40 | 23 | [37] Jil Teichmann v Alison Riske [50] | 6-7,3-6 | |
| WTA Indian Wells | 03/10 01:45 | 23 | [71] Danka Kovinic v Jil Teichmann [37] | 7-5,7-5 | |
| WTA Doha | 02/23 16:00 | 26 | [2] Aryna Sabalenka v Jil Teichmann [41] | 6-2,6-1 | |
| WTA Doha | 02/22 14:35 | 25 | [53] Alison Van Uytvanck v Jil Teichmann [41] | 6-7,5-7 | |
| WTA Doha | 02/21 15:40 | 24 | [41] Jil Teichmann v Angelique Kerber [18] | 4-6,6-3,6-2 | |
| WTA Dubai | 02/17 12:55 | 27 | [35] Jil Teichmann v Veronika Kudermetova [31] | 2-6,7-5,4-6 | |
| WTA Dubai | 02/16 10:00 | 26 | [15] Elina Svitolina v Jil Teichmann [35] | 6-7,2-6 | |
| WTA Dubai | 02/15 10:45 | 25 | [22] Elise Mertens v Jil Teichmann [35] | 2-6,4-6 |
Wikipedia - Jil Teichmann
Jil Belén Teichmann (born 15 July 1997) is a Swiss professional tennis player. She has been ranked by the Women's Tennis Association (WTA) as high as world No. 21 in singles and No. 73 in doubles. She has won two titles in singles and two in doubles on the WTA Tour, along with one WTA 125 doubles title. In addition, she won six singles titles and five doubles titles on the ITF Circuit.
A former junior world No. 3, Teichmann won a Grand Slam title in the girls' doubles event at the 2014 US Open. That year, she also won a gold medal for Switzerland in mixed doubles at the Summer Youth Olympics in Nanjing.
Her breakthrough as a senior player came in May 2019 when she won her first WTA Tour title in Prague. In July of that year, she won another WTA tournament title after making her first top-10 win over Kiki Bertens. She continued progressing, in March 2021 reaching the semifinals of the WTA 1000 Dubai Championships. With these performances she entered the top 50. Later that year, she reached the final of the Cincinnati Open, a WTA 1000 event, defeating Naomi Osaka, Belinda Bencic, and Karolína Plíšková, before falling to world No. 1, Ashleigh Barty.