Stadium: Court 5 Round: 44 Ground: Hardcourt indoor
| ITF USA F25 Qual | 2017/07/22 14:30 | Chang, Jonathan v Emmett Ward | 6-2,6-1 |
| ITF Canada F1 Qual | 2018/02/24 15:00 | Tiraspolsky, Ilya v Emmett Ward | 2-6,0-6 |
| ITF USA F6 | 2018/01/28 14:30 | Matthew Segura v Emmett Ward | 6-3,6-4 |
| ITF USA F5 | 2018/01/19 14:00 | Ore, I. A. v Emmett Ward | 6-2,6-4 |
| ITF USA F4 | 2018/01/13 20:00 | Holt, Bradley v Emmett Ward | 6-3,7-6 |
| ITF Dominican Republic F3 | 2017/12/10 14:00 | Lamble, John v Emmett Ward | 6-1,6-2 |
| ITF Dominican Republic F2 | 2017/12/04 13:00 | Tikhomirov, Maksim v Emmett Ward | 6-3,6-1 |
| ITF Dominican Republic F2 | 2017/12/03 14:00 | Emmett Ward v Wang, Chukang | 6-3,3-6,6-2 |
| ITF Dominican Republic F1 | 2017/11/29 16:05 | Emmett Ward v Hernandez-Fernandez, Jose | 4-6,2-6 |
| ITF Germany F3 Qual | 2018/01/28 13:00 | Walterscheid-Tukic, Nikolas v Chang, Jonathan | 6-7,6-4,7-6 |
| ITF Germany F2 Qual | 2018/01/21 13:00 | Heger, Tim v Chang, Jonathan | 7-6,6-4 |
| ITF Germany F1 | 2018/01/08 09:00 | Chang, Jonathan v Aichhorn, Jakob | 2-6,3-6 |
| ITF Dominican Republic F1 | 2017/11/27 13:00 | Chang, Jonathan v Greif, Lukas | 6-3,4-6,0-6 |
| ITF USA F37 | 2017/11/17 18:15 | Chang, Jonathan v Nuno Borges | 2-6,2-6 |
| ITF USA F37 | 2017/11/16 16:00 | Harrison Adams v Chang, Jonathan | 0-6,3-6 |
| ITF USA F37 | 2017/11/14 17:50 | Nick Chappell v Chang, Jonathan | 6-3,4-6,3-6 |
| ITF USA F36 | 2017/11/04 16:30 | Chang, Jonathan v Paul Jubb | 5-7,2-6 |