 Yuto Muramatsu | def. |  Jangmok Lee | 4-0 (11-5, 12-10, 16-14, 11-6) |
 Xiang Lyu | def. | Seungmin Cho | 4-2 (9-11, 9-11, 11-3, 11-9, 11-7, 11-4) |
| Fei Xue | def. |  Dang Qiu | 4-0 (11-8, 11-7, 11-5, 11-7) |
| Jingkun Liang | def. |  Anton Kallberg | 4-2 (11-8, 12-10, 11-3, 4-11, 12-14, 11-6) |
| Dingshuo Liu | def. |  Hugo Calderano | 4-2 (11-3, 7-11, 12-10, 11-6, 11-7, 11-4) |
| Chuqin Wang | def. |  Filip Zeljko | 4-0 (11-7, 11-7, 11-9, 11-7) |
| Minhyeok Kim | def. |  Ka Tak Hung | 4-0 (11-7, 11-6, 11-7, 11-5) |
| Ziyang Yu | def. | Yuma Tsuboi | 4-0 (11-8, 11-8, 11-7, 13-11) |
| Yuto Muramatsu | def. |  Alexandre Cassin | 4-0 (11-4, 11-2, 14-12, 11-9) |
| Jangmok Lee | def. |  Andreas Dilling | 4-0 (11-8, 14-12, 12-10, 11-6) |
| Seungmin Cho | def. |  Aliaksandr Khanin | 4-2 (11-8, 9-11, 11-8, 11-5, 10-12, 11-7) |
| Xiang Lyu | def. |  Wang-Wei Peng | 4-2 (11-9, 9-11, 9-11, 13-11, 11-6, 11-5) |
| Dang Qiu | def. | Kwan Kit Ho | 4-2 (9-11, 13-11, 12-10, 12-10, 4-11, 11-9) |
| Fei Xue | def. | Tomislav Pucar | 4-0 (11-5, 11-5, 11-8, 12-10) |
| Anton Kallberg | def. | Heng-Wei Yang | 4-2 (13-15, 11-2, 11-8, 13-11, 9-11, 11-3) |
| Jingkun Liang | def. | Kazuhiro Yoshimura | 4-0 (12-10, 11-6, 11-9, 11-7) |
| Hugo Calderano | def. |  Patryk Zatowka | 4-1 (11-5, 11-8, 13-11, 10-12, 11-6) |
| Dingshuo Liu | def. |  Jing Yuan Yin | 4-1 (11-8, 8-11, 11-7, 11-6, 11-8) |
| Chuqin Wang | def. | Hon Ming Li | 4-0 (11-4, 11-7, 11-5, 11-9) |
| Filip Zeljko | def. |  Adam Szudi | 4-0 (11-9, 11-2, 11-6, 11-9) |
| Minhyeok Kim | def. |  Kirill Gerassimenko | 4-0 (11-8, 11-8, 11-7, 11-4) |
| Ka Tak Hung | def. | Tai-Wei Wang | 4-3 (14-12, 3-11, 12-14, 11-7, 11-7, 5-11, 11-6) |
| Yuma Tsuboi | def. |  Cristian Pletea | 4-0 (11-7, 11-4, 11-7, 11-1) |
| Ziyang Yu | def. |  Padasak Tanviriyavechakul | 4-2 (11-8, 5-11, 11-4, 11-7, 9-11, 11-6) |
| Yuto Muramatsu | def. |  Fermin Tenti | 4-0 (11-1, 11-1, 11-7, 11-8) |
| Alexandre Cassin | def. |  Konstantin Chernov | 4-1 (11-6, 11-8, 7-11, 11-8, 11-8) |
| Andreas Dilling | def. | Man Ho Kwan | 4-1 (11-6, 5-11, 11-3, 12-10, 11-9) |
| Jangmok Lee | def. |  Diogo Chen | 4-3 (7-11, 11-7, 12-10, 6-11, 8-11, 11-4, 11-5 ) |
| Seungmin Cho | def. | Massao Kohatsu | 4-1 (11-4, 8-11, 11-6, 12-10, 11-4) |
| Aliaksandr Khanin | def. | Elias Ranefur | 4-0 (11-7, 11-4, 11-9, 11-4) |
| Wang-Wei Peng | def. | Bence Majoros | 4-1 (13-11, 5-11, 11-8, 11-7, 11-6) |
| Xiang Lyu | def. | Kilian Ort | 4-0 (11-9, 11-8, 11-5, 11-7) |
| Kwan Kit Ho | def. | Romain Ruiz | 4-1 (11-9, 11-7, 6-11, 11-5, 12-10) |
| Dang Qiu | def. |  Alexander Valuch | 4-1 (11-7, 11-6, 11-4, 4-11, 12-10) |
| Tomislav Pucar | def. | Ganghyeon Park | 4-1 (11-6, 16-14, 9-11, 11-7, 11-7) |
| Fei Xue | def. |  Youssef Abdel-Aziz | 4-0 (11-4, 11-6, 11-2, 11-2) |
| Heng-Wei Yang | def. | Horacio Cifuentes | 4-1 (11-7, 8-11, 11-6, 11-5, 11-8) |
| Anton Kallberg | def. |  Stanislav Kucera | 4-3 (11-6, 6-11, 7-11, 11-6, 11-5, 7-11, 11-9) |
| Kazuhiro Yoshimura | def. | Claus Nielsen | 4-0 (14-12, 11-7, 11-3, 11-6) |
| Jingkun Liang | def. | Marek Badowski | 4-0 (11-4, 11-3, 11-8, 11-5) |
| Hugo Calderano | def. | Tomas Polansky | 4-0 (11-6, 15-13, 11-9, 11-8) |
| Patryk Zatowka | def. | Hsueh-Yu Lin | 4-2 (11-9, 8-11, 11-7, 13-11, 7-11, 11-9) |
| Jing Yuan Yin | def. | Sadi Ismailov | 4-1 (11-9, 11-6, 11-9, 6-11, 11-4) |
| Dingshuo Liu | def. | Aly Ghallab | 4-0 (11-4, 11-6, 11-1, 11-2) |
| Hon Ming Li | def. | Can Akkuzu | 4-0 (14-12, 11-5, 13-11, 11-8) |
| Chuqin Wang | def. |  Martin Allegro | 4-0 (14-12, 11-2, 11-2, 11-7) |
| Adam Szudi | def. | Carl Ahlander-J | 4-1 (11-6, 11-1, 11-8, 8-11, 11-9) |
| Filip Zeljko | def. | Asuka Sakai | 4-3 (3-11, 3-11, 3-11, 13-11, 11-8, 11-7, 11-5 ) |
| Minhyeok Kim | def. |  Kanak Jha | 4-1 (11-2, 9-11, 11-6, 11-5, 13-11) |
| Kirill Gerassimenko | def. |  Darko Jorgic | 4-1 (8-11, 11-6, 11-5, 11-9, 11-9) |
| Tai-Wei Wang | def. | Nandor Ecseki | 4-2 (11-4, 13-11, 7-11, 11-5, 4-11, 11-4) |
| Ka Tak Hung | def. | David Reitspies | 4-1 (11-6, 12-10, 10-12, 11-9, 11-5) |
| Yuma Tsuboi | def. | Jakub Folwarski | 4-0 (11-6, 11-7, 11-4, 11-4) |
| Cristian Pletea | def. | Nolan Givone | 4-0 (11-9, 11-8, 11-7, 11-8) |
| Padasak Tanviriyavechakul | def. | Anders Eriksson | 4-0 (11-6, 14-12, 11-6, 11-6) |
| Ziyang Yu | def. | Tobias Rasmussen | 4-0 (13-11, 11-6, 11-8, 11-7) |
