Stadium: Court 08 Round: 27 Ground: Hardcourt outdoor
| ITF W15 Cancun | 2021/10/12 17:00 | Alice Gillan v Madison Sieg | 4-6,2-6 |
| ITF W15 Cancun | 2021/10/07 15:00 | Madison Sieg v Ng, Taylor | 6-4,5-7,1-6 |
| ITF W15 Cancun | 2021/10/05 15:30 | Jessica Hinojosa Gomez v Madison Sieg | 6-3,3-6,5-7 |
| ITF W15 L'Aquila | 2021/06/22 12:15 | Tatiana Pieri v Madison Sieg | 6-3,6-1 |
| ITF - W15 Antalya | 2021/05/12 08:50 | Julia Avdeeva v Madison Sieg | 6-2,6-1 |
| ITF W25 Naples | 2021/05/04 14:00 | Madison Sieg v Gabriella Price | 6-2,2-6,8-10 |
| ITF W25 Naples | 2021/05/03 14:00 | Katrina Scott v Madison Sieg | 3-6,6-3,6-10 |
| Orlando, Singles Qualifying W-WITF-USA-02A | 2018/03/07 17:45 | Madison Sieg v Astra Sharma | 2-6,3-6 |
| ITF W15 Cancun | 2021/10/14 14:00 | Maria Camila Torres Murcia v Yuliana Monroy | 5-7,1-6 |
| ITF W15 Cancun | 2021/10/13 14:00 | Kyle McPhillips v Yuliana Monroy | 1-6,5-7 |
| ITF W15 Cancun | 2021/10/08 15:00 | Yuliana Monroy v Maria Jose Portillo Ramirez | 5-7,2-6 |
| ITF W15 Cancun | 2021/10/07 15:00 | Yuliana Monroy v Alica Rusova | 6-4,6-4 |
| ITF W15 Cancun | 2021/10/06 17:50 | Yuliana Monroy v Marian G P Cano | 6-4,6-0 |
| ITF W15 Cancun | 2021/09/29 17:10 | Christina Rosca v Yuliana Monroy | 6-3,7-6 |
| ITF W25 Medellin | 2021/09/16 18:00 | Yuliana Monroy v Mell E R Gonzalez | 1-6,6-7 |
| ITF W25 Medellin | 2021/09/15 14:55 | Yuliana Monroy v Maria Camila Torres Murcia | 6-1,6-3 |