 USA: W100 Charleston, SC - Singles - Main |
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| 1/8-finals | Bellis C. | Kawa K. | 0:2 (64:7, 4:6) | details | 05.11.2020 |
| 1/16-finals | Bolsova Zadoinov A. | Bellis C. | 0:2 (60:7, 0:6) | details | 04.11.2020 |
| USA: W80 Tyler, TX - Singles - Main |
|---|
| Semi-finals | Bellis C. | Kostyuk M. | WO. | details | 31.10.2020 |
| Quarter-finals | Bellis C. | Bolsova Zadoinov A. | 2:1 (6:0, 2:6, 7:5) | details | 30.10.2020 |
| 1/8-finals | Bellis C. | Loeb J. | 2:1 (3:6, 6:1, 6:2) | details | 30.10.2020 |
| 1/16-finals | Friedsam A-L. | Bellis C. | 0:2 (3:6, 3:6) | details | 29.10.2020 |
| USA: W80 Macon, GA - Singles - Main |
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| Final | Kostyuk M. | Bellis C. | 1:1 RET. (4:6, 7:64, 0:0) | details | 25.10.2020 |
| Semi-finals | Bellis C. | Lepchenko V. | 1:0 RET. (6:3, 1:0) | details | 24.10.2020 |
| Quarter-finals | Bellis C. | Errani S. | 2:0 (6:0, 6:3) | details | 23.10.2020 |
| 1/8-finals | Lee G. | Bellis C. | 0:2 (1:6, 3:6) | details | 22.10.2020 |
| 1/16-finals | Bellis C. | Arruabarrena L. | 2:0 (6:3, 7:5) | details | 21.10.2020 |
 France: French Open - Singles - Main |
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| 1/64-finals | Bellis C. | Pera B. | 0:2 (63:7, 1:6) | details | 28.09.2020 |
| USA: US Open - Singles - Main |
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| 1/32-finals | Bellis C. | Brady J. | 0:2 (1:6, 2:6) | details | 02.09.2020 |
| 1/64-finals | Bellis C. | Korpatsch T. | 2:1 (613:7, 6:3, 6:2) | details | 01.09.2020 |
| USA: Cincinnati - Singles - Main |
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| 1/16-finals | Bellis C. | Sabalenka A. | 1:2 (7:61, 4:6, 5:7) | details | 25.08.2020 |
| 1/32-finals | Bellis C. | Dodin O. | 2:1 (6:2, 3:6, 7:61) | details | 23.08.2020 |
| USA: Cincinnati - Singles - Qualification |
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| Final | Bonaventure Y. | Bellis C. | 1:2 (6:4, 4:6, 1:6) | details | 21.08.2020 |
| Semi-finals | Bellis C. | Brengle M. | 2:0 (6:3, 7:64) | details | 20.08.2020 |
| USA: Lexington - Singles - Main |
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| Quarter-finals | Bellis C. | Teichmann J. | 0:2 (2:6, 4:6) | details | 14.08.2020 |
| 1/8-finals | Bellis C. | Pegula J. | 2:0 (6:3, 6:2) | details | 13.08.2020 |
| 1/16-finals | Di Lorenzo F. | Bellis C. | 0:2 (1:6, 2:6) | details | 11.08.2020 |
| 1/16-finals | Anisimova A. | Bellis C. | CAN. | details | 11.08.2020 |
| USA: Young Kings Scholarship - Singles - Main |
|---|
| | Fernandez L. | Bellis C. | CAN. | details | 05.07.2020 |
| | Bellis C. | Bouchard E. | 2:0 (6:4, 6:3) | details | 04.07.2020 |
| | Bellis C. | Davis L. | CAN. | details | 04.07.2020 |
| | Bellis C. | Bouzkova M. | CAN. | details | 03.07.2020 |
| | Bellis C. | McNally C. | 1:2 (6:4, 5:7, 7:10) | details | 03.07.2020 |
| USA: W100 Nicholasville - Singles - Main |
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| 1/16-finals | Kalinskaya A. | Bellis C. | CAN. | details | 12.02.2020 |
 Australia: Australian Open - Singles - Main |
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| 1/16-finals | Mertens E. | Bellis C. | 2:1 (6:1, 65:7, 6:0) | details | 25.01.2020 |
| 1/32-finals | Bellis C. | Muchova K. | 2:0 (6:4, 6:4) | details | 23.01.2020 |
| 1/64-finals | Bellis C. | Maria T. | 2:0 (6:0, 6:2) | details | 21.01.2020 |
| Australia: Hobart - Singles - Main |
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| 1/8-finals | Kudermetova V. | Bellis C. | 2:0 (7:66, 6:1) | details | 15.01.2020 |
| 1/16-finals | Bellis C. | Bouzkova M. | 2:1 (3:6, 7:64, 6:3) | details | 14.01.2020 |
 New Zealand: Auckland - Singles - Main |
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| 1/16-finals | Bellis C. | Pegula J. | 0:2 (0:6, 4:6) | details | 06.01.2020 |
| USA: Houston - Singles - Main |
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| 1/8-finals | Bellis C. | Flipkens K. | 0:2 (4:6, 4:6) | details | 15.11.2019 |
| 1/16-finals | Lepchenko V. | Bellis C. | 1:2 (4:6, 6:4, 65:7) | details | 12.11.2019 |
| 1/32-finals | Bellis C. | Perez E. | 2:0 (6:3, 6:2) | details | 11.11.2019 |
 Italy: Rome - Singles - Main |
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| 1/32-finals | Saville D. | Bellis C. | CAN. | details | 14.05.2018 |
| USA: Miami - Singles - Main |
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| 1/64-finals | Bellis C. | Azarenka V. | 0:2 (3:6, 0:6) | details | 21.03.2018 |
| USA: Indian Wells - Singles - Main |
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| 1/32-finals | Vesnina E. | Bellis C. | 2:1 (2:6, 6:1, 6:1) | details | 10.03.2018 |
| 1/64-finals | Sorribes Tormo S. | Bellis C. | 0:2 (0:6, 3:6) | details | 08.03.2018 |
 United Arab Emirates: Dubai - Singles - Main |
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| 1/8-finals | Bellis C. | Muguruza G. | 0:2 (3:6, 5:7) | details | 21.02.2018 |
| 1/16-finals | Bellis C. | Mertens E. | 2:0 (6:3, 6:3) | details | 20.02.2018 |
 Qatar: Doha - Singles - Main |
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| Quarter-finals | Bellis C. | Halep S. | 0:2 (0:6, 4:6) | details | 16.02.2018 |
| 1/8-finals | Pliskova Ka. | Bellis C. | 0:2 (64:7, 3:6) | details | 15.02.2018 |
| 1/16-finals | Bellis C. | Keys M. | 2:1 (2:6, 6:3, 6:0) | details | 14.02.2018 |
| 1/32-finals | Bellis C. | Kasatkina D. | 1:0 RET. (7:5, 4:1) | details | 12.02.2018 |