| ITF Korea F1 | 2017/05/31 01:00 | Lee, Dong-Kyu v 홍, 승찬 | 1-6,6-4,4-6 |
| ITF Korea F1 Qual | 2017/05/29 03:40 | Lee, Dong-Kyu v 신, 동휘 | 6-3,6-1 |
| ITF Korea F1 Qual | 2017/05/28 01:00 | Lee, Dong-Kyu v 박, 준상 | 6-2,7-5 |
| Indonesia F6, Singles Qualifying | 2017/04/11 03:00 | 싱, 카루누데이 v Lee, Dong-Kyu | 3-6,6-4,6-3 |
| Indonesia F6, Singles Qualifying | 2017/04/10 03:00 | Lee, Dong-Kyu v 라만, 아리에프 | 6-4,6-3 |
| Indonesia F6, Singles Qualifying | 2017/04/09 04:00 | Lee, Dong-Kyu v 나자루크, 도미니크 | 7-5,6-4 |
| ITF Indonesia F5 Qual | 2017/04/04 03:20 | Lee, Dong-Kyu v 나자루크, 도미니크 | 3-6,7-6,6-7 |
| ITF Indonesia F5 Qual | 2017/04/02 08:15 | Lee, Dong-Kyu v Susanto, Hendrawan | 6-3,7-6 |
| ITF Korea F2 Qual | 2017/06/03 02:00 | 정, 연석 v Jeong, Suk Young | 6-2,6-1 |