Stadium: Court 6 Round: 62
| ITF USA F28B | 2018/10/21 15:00 | Chang, Jonathan v Papa, Spencer | 3-6,6-3,6-1 |
| ITF USA F28 | 2018/10/17 14:30 | Oliver Crawford v Chang, Jonathan | 6-1,6-2 |
| ITF USA F28 | 2018/10/15 14:35 | Marson, Guido v Chang, Jonathan | 4-6,2-6 |
| ITF USA F28 | 2018/10/14 15:00 | Vedri Asensi, Alejandro v Chang, Jonathan | 2-6,1-6 |
| ITF USA F28 | 2018/10/13 17:30 | Sorbo, Jonathan v Chang, Jonathan | 0-6,2-6 |
| ITF USA F27 | 2018/10/10 19:00 | Chang, Jonathan v Ryan Peniston | 0-6,4-6 |
| ITF USA F27 | 2018/10/08 16:50 | Tim Ruehl v Chang, Jonathan | 1-6,6-7 |
| USA F26, Singles Qualifying | 2018/09/23 17:00 | Chang, Jonathan v Kelly, Robert | 2-6,2-6 |
| ITF USA F28B | 2018/10/21 15:00 | Allen, Leighton v Alastair Gray | 3-6,6-7 |
| ITF USA F2 Qual | 2018/01/10 18:00 | Baughman, Deiton v Alastair Gray | 6-1,6-2 |
| ITF USA F2 Qual | 2018/01/07 19:00 | Alastair Gray v Manji, Raheel | 6-1,2-6,6-3 |
| ITF USA F2 Qual | 2018/01/06 18:00 | Alastair Gray v Ross, Jesse | 6-1,6-1 |
| ITF USA F39 | 2017/11/28 17:20 | Ward, Alexander v Alastair Gray | 6-4,6-3 |
| ITF USA F39 Qual | 2017/11/27 18:10 | Pervolarakis, Michail v Alastair Gray | 6-2,2-6,6-7 |
| ITF USA F39 Qual | 2017/11/26 18:00 | Johnson, Hunter v Alastair Gray | 3-6,4-6 |
| Challenger Las Vegas Qual | 2017/10/14 19:05 | Redlicki, Martin v Alastair Gray | 3-6,6-2,7-5 |