| ITF W15 Ibague | 09/09 16:00 | 26 | Thaisa Grana Pedretti v Ana Maria Becerra | 6-2,6-2 | |
| ITF W15 Ibague | 09/08 16:00 | 25 | Thaisa Grana Pedretti v Vivian Mayumi Toma | 6-0,6-1 | |
| ITF W15 Sharm El Sheikh | 03/31 12:10 | 25 | Silvia Ambrosio v Thaisa Grana Pedretti | 3-6,6-2,6-0 | |
| ITF W15 Sharm El Sheikh | 03/26 07:00 | 27 | Matilda Mutavdzic v Thaisa Grana Pedretti | 6-4,7-5 | |
| ITF W15 Sharm El Sheikh | 03/25 07:00 | 26 | Anastasia Sukhotina v Thaisa Grana Pedretti | 4-6,3-6 | |
| ITF W15 Sharm El Sheikh | 03/24 13:40 | 25 | Shira Atturu v Thaisa Grana Pedretti | 0-6,0-6 | |
| ITF W15 Sharm El Sheikh | 03/18 07:00 | 26 | Elizabeth Mandlik v Thaisa Grana Pedretti | 6-1,6-1 | |
| ITF W15 Sharm El Sheikh | 03/17 08:30 | 25 | Aya El Sayed v Thaisa Grana Pedretti | 2-6,7-5,2-6 | |
| ITF W15 Sharm El Sheikh | 03/11 09:15 | 26 | Thaisa Grana Pedretti v Elizabeth Mandlik | 6-3,5-7,2-6 | |
| ITF W15 Sharm El Sheikh | 03/10 12:10 | 25 | Thaisa Grana Pedretti v Dasha Plekhanova | 6-3,6-3 | |
| ITF W15 Sharm El Sheikh | 03/03 12:10 | 25 | Raphaelle Lacasse v Thaisa Grana Pedretti | 4-6,7-6,6-4 | |
| ITF W15 Sharm El Sheikh | 02/25 10:30 | 26 | [407] Thaisa Grana Pedretti v Alina Charaeva [497] | 4-6,2-6 | |
| ITF W15 Sharm El Sheikh | 02/24 08:40 | 25 | Thaisa Grana Pedretti v Alexandra Vecic | 3-6,6-3,6-4 | |
| ITF W25 Olimpia | 03/12 21:00 | - | Carolina M R Alves v Thaisa Grana Pedretti | View | |
| ITF W25 Olimpia | 03/11 22:35 | 25 | [384] Thaisa Grana Pedretti v Valentina Ivakhnenko [240] | 7-6,6-0 | |
| ITF W25 Las Vegas | 03/03 18:00 | 54 | [379] Thaisa Grana Pedretti v Pamela Montez [368] | 3-6,1-6 | |
| ITF W25 Las Vegas | 03/02 18:00 | 54 | Thaisa Grana Pedretti v Chanelle Van Nguyen | 6-2,6-2 | |
| ITF W15 Cancun | 02/22 14:30 | 28 | Thaisa Grana Pedretti v Andrea Gamiz | 5-7,5-7 | |
| ITF W15 Cancun | 02/21 14:00 | 27 | Thaisa Grana Pedretti v Eugenia Ganga | 6-0,7-5 | |
| ITF W15 Cancun | 02/20 16:00 | 26 | Thaisa Grana Pedretti v Michiru Furuya | 6-2,6-1 | |
| ITF W15 Cancun | 02/19 13:50 | 25 | Thaisa Grana Pedretti v Eleonore Tchakarova | 7-5,6-2 | |
| ITF W15 Cancun | 02/15 14:00 | 28 | [386] Thaisa Grana Pedretti v Dasha Ivanova [466] | 4-6,5-7 | |
| ITF W15 Cancun | 02/14 16:00 | 27 | Thaisa Grana Pedretti v Eduarda Piai | 6-2,6-3 | |
| ITF W15 Cancun | 02/13 18:05 | 26 | Thaisa Grana Pedretti v Brittany Collens | 6-2,6-0 | |
| ITF W15 Cancun | 02/11 16:10 | 25 | Thaisa Grana Pedretti v Tiphanie Fiquet | 6-1,6-2 | |
| ITF W15 Cancun | 02/07 14:00 | 27 | Thaisa Grana Pedretti v Ingrid G Martins | 4-6,1-6 | |
| ITF W15 Cancun | 02/06 13:55 | 26 | Thaisa Grana Pedretti v Stacey Fung | 2-6,6-3,6-3 | |
| ITF W15 Cancun | 02/05 17:40 | 25 | Thaisa Grana Pedretti v Hind Abdelouahid | 7-5,6-4 | |
| ITF W60 Colina | 11/04 15:25 | 54 | Thaisa Grana Pedretti v Solana Sierra | 4-6,6-2,6-10 | |
| ITF W60 Asuncion | 10/30 19:00 | 25 | Guillermina Naya v Thaisa Grana Pedretti | 6-1,6-4 |