Pekin 
Osaka 
Guadalajara 
Seoul 
Monastir 
Sofia 1 
Barranquilla 
Bonn 
Hersonissos 3 
Cordenons 
Grodzisk Mazowiecki 
Davis Сup Group I Tennis. Played Chang Sophie. Season 2021
Country 
USA. Ranking WTA 451.
USA. Ranking WTA 451.| WTA - Midland | ||||
|---|---|---|---|---|
| 01.11.2021 | Qialification final | Glatch Alexa — Chang Sophie | 2:0 (6:4, 6:1) |
|
| 31.10.2021 | Qualifications - 1st round | Chang Sophie — Popovic Ivana | 2:1 (6:4, 3:6, 6:3) |
|
| WTA - Cleveland | ||||
| 21.08.2021 | Qualifications - 1st round | Shibahara Ena — Chang Sophie | 2:1 (2:6, 7:6, 6:1) |
|
| W100 Landisville | ||||
| 12.08.2021 | Second round | Haddad Maia Beatriz — Chang Sophie | 2:0 (6:4, 6:4) |
|
| 11.08.2021 | First round | Chang Sophie — Kalinskaya Anna | 2:0 (7:6, 7:5) |
|
| 10.08.2021 | Qialification final | Snigur Daria — Chang Sophie | 2:1 (6:3, 6:7, 11:9) |
|
| 09.08.2021 | Qualifications - 1st round | Chang Sophie — Savinykh Valeria | 2:0 (6:4, 7:5) |
|
| WTA - Concord | ||||
| 02.08.2021 | Qialification final | Bolkvadze Mariam — Chang Sophie | 2:0 (6:2, 6:1) |
|
| 01.08.2021 | Qualifications - 1st round | Chang Sophie — Barthel Mona | 2:0 (6:2, 6:3) |
|
| W100 Charleston | ||||
| 03.05.2021 | Qualifications - 1st round | Radwanska Urszula — Chang Sophie | 2:0 (6:1, 6:2) |
|
| W60 Charlottesville | ||||
| 27.04.2021 | Qialification final | Min Grace — Chang Sophie | 2:1 (2:6, 6:4, 10:6) |
|
| 26.04.2021 | Qualifications - 1st round | Chang Sophie — Bjorklund Mirjam | 2:0 (6:3, 6:3) |
|
| WTA - Family Circle Cup | ||||
| 27.07.2021 | First round | Davis Lauren — Chang Sophie | 2:0 (6:3, 6:4) |
|
| W80 Tyler | ||||
| 27.10.2021 | First round | Doi Misaki — Chang Sophie | 2:1 (6:4, 3:6, 6:3) |
|