Stadium: Center Court Round: 46 Ground: Hardcourt outdoor
| Challenger Zhuhai Qual | 2018/03/04 08:35 | Alex Bolt v Yunseong Chung | 6-4,6-2 |
| Challenger Zhuhai Qual | 2018/03/03 06:50 | Yunseong Chung v Andrea Vavassori | 6-3,4-6,6-3 |
| Challenger Yokohama | 2018/02/27 02:25 | Yunseong Chung v Jason Jung | 2-6,7-6,4-6 |
| Challenger Yokohama Qual | 2018/02/26 04:05 | Makoto Ochi v Yunseong Chung | 3-6,6-1,1-6 |
| Challenger Yokohama Qual | 2018/02/25 02:35 | Yunseong Chung v Takuto Niki | 6-7,6-3,6-3 |
| Challenger Yokohama Qual | 2018/02/24 05:05 | Masato Shiga v Yunseong Chung | 0-6,5-7 |
| ITF Spain F4 | 2018/02/08 11:00 | Ivan Gakhov v Yunseong Chung | 6-4,6-4 |
| ITF Spain F3 | 2018/01/30 13:40 | Daniel Gimeno-Traver v Yunseong Chung | 6-4,6-1 |
| Challenger Shenzhen Qual | 2018/03/11 01:30 | Rigele Te v Gianluigi Quinzi | 6-7,5-7 |
| Challenger Bergamo | 2018/02/22 17:00 | Gianluigi Quinzi v Andrea Arnaboldi | 6-7,6-3,3-6 |
| Challenger Bergamo | 2018/02/20 14:00 | Gianluigi Quinzi v Andrea Basso | 6-4,6-2 |
| ITF Egypt F4 | 2018/02/11 08:00 | Jaroslav Pospisil v Gianluigi Quinzi | 2-6,4-6 |
| ITF Egypt F4 | 2018/02/10 08:00 | David Poljak v Gianluigi Quinzi | 3-6,1-6 |
| ITF Egypt F4 | 2018/02/09 11:30 | Ronald Slobodchikov v Gianluigi Quinzi | 3-6,4-6 |
| ITF Egypt F4 | 2018/02/08 08:00 | Marek Gengel v Gianluigi Quinzi | 3-6,5-7 |
| ITF Egypt F4 | 2018/02/06 08:00 | Adrian Andrzejczuk v Gianluigi Quinzi | 0-6,6-4,5-7 |