Stadium: Court 4 Round: 25
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2016/11/01 08:30 | Iansitova, Svetlana v Lapustina, Irina | 4-6,6-7 |
| ITF Women Astana Qual | 2018/07/14 04:00 | Frolova, Anastasia v Lapustina, Irina | 6-2,6-2 |
| ITF Women Torun Qual | 2018/06/25 12:30 | Pirazhenka, Sviatlana v Lapustina, Irina | 6-0,6-4 |
| ITF Women Torun Qual | 2018/06/25 08:25 | Schmitz, Michelle v Lapustina, Irina | 1-6,2-6 |
| Hodmezovasarhely, Q. Simples W-WITF-HUN-02A | 2018/06/09 11:30 | Lapustina, Irina v Draginja Vukovic | 2-6,0-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/06/06 07:30 | Lapustina, Irina v Lopatetska, Daria | 2-6,1-6 |
| Antalya, Singles Qualifying W-WITF-TUR-08A | 2018/05/29 07:30 | Lapustina, Irina v Oliwia Szymczuch | 0-6,0-6 |
| Antalya, Qualifications Simples W-WITF-TUR-46A | 2018/05/21 07:30 | Lapustina, Irina v Drozd Pereira, Erika | 3-6,4-6 |
| Antalya, Qualifications Simples W-WITF-TUR-46A | 2018/05/20 07:30 | Lapustina, Irina v Ravanini de Souza, Larissa | 6-1,6-3 |
| ITF Women Tampere Qual | 2018/07/23 07:00 | Kolesnikova, Ksenia v Iansitova, Svetlana | 0-6,0-6 |
| ITF Women Tampere Qual | 2018/07/22 08:15 | Minetti, Martina v Iansitova, Svetlana | 1-6,0-6 |
| ITF Women Parnu | 2018/07/18 08:00 | Iansitova, Svetlana v Tarasova, Ksenia | 3-6,6-4,2-6 |
| ITF Women Parnu | 2018/07/17 12:55 | Wijesundera, Rushri v Iansitova, Svetlana | 2-6,3-6 |
| ITF Women Knokke | 2018/07/09 10:00 | Luini, Sofia v Iansitova, Svetlana | 6-3,6-2 |
| ITF Women Alkmaar | 2018/06/26 09:00 | Wargnier, Lucie v Iansitova, Svetlana | 6-3,7-6 |
| ITF Women Alkmaar | 2018/06/24 09:00 | Iansitova, Svetlana v Gouvernante, Donnaroza | 6-3,6-3 |
| ITF Women Alkmaar | 2018/06/23 08:00 | Antoniou, Katerina v Iansitova, Svetlana | 2-6,0-6 |