Round: 62 Ground: Clay
| ITF - USA F15 - Qualifikation | 2018/06/16 15:30 | Jonathan Chang v Reese Stalder | 4-6,4-6 |
| ITF - USA F13 - Qualifikation | 2018/06/10 14:00 | Drew Van Orderlain v Jonathan Chang | 7-5,6-2 |
| Challenger - Irving - Qualifikation | 2018/03/12 17:30 | Arthur Rinderknech v Jonathan Chang | 6-1,6-4 |
| ITF - Kanada F2 - Qualifikation | 2018/03/04 15:00 | Deiton Baughman v Jonathan Chang | 6-1,6-1 |
| ITF - Kanada F2 - Qualifikation | 2018/03/03 15:00 | Jonathan Chang v Julian Zlobinsky | 6-4,3-6,3-6 |
| ITF - Kanada F1 | 2018/03/01 00:00 | Jonathan Chang v Frank Dancevic | 2-6,6-7 |
| ITF - Kanada F1 - Qualifikation | 2018/02/26 15:00 | Sem Verbeek v Jonathan Chang | 5-7,6-3,4-6 |
| ITF - Kanada F1 - Qualifikation | 2018/02/25 15:00 | Emmett Ward v Jonathan Chang | 2-6,4-6 |
| ITF - USA F15 - Qualifikation | 2018/06/16 15:30 | Robert Kelly v Kyle Johnson | 6-1,6-3 |
| ITF - USA F13 - Qualifikation | 2018/06/09 13:00 | Kyle Johnson v Britton Johnston | 2-6,2-6 |
| ITF - Ägypten F11 | 2018/03/25 08:00 | Jose Fco. Vidal Azorin v Kyle Johnson | 6-1,6-1 |
| ITF - Ägypten F11 | 2018/03/24 08:00 | Koonwar Gupta v Kyle Johnson | 1-6,6-4,6-7 |
| ITF - Ägypten F10 | 2018/03/18 08:00 | Kyle Johnson v Alejandro O Palacios | 2-6,4-6 |
| ITF - Ägypten F10 | 2018/03/17 08:00 | David Hopkins v Kyle Johnson | 4-6,3-6 |
| ITF - Ägypten F9 | 2018/03/10 08:00 | Kyle Johnson v Giovani Samaha | 0-6,4-6 |
| ITF - Ägypten F8 | 2018/03/03 14:30 | Kyle Johnson v Milos Sekulic | 4-6,2-6 |