| Canada F7, Singles | 09/13 15:40 | 26 | Barry, Sam v Chang, Jonathan | 6-3,6-3 | |
| Canada F7, Singles | 09/12 17:15 | 25 | Lin, Winston v Chang, Jonathan | 2-6,1-6 | |
| ITF Canada F7 Qual | 09/10 16:15 | 44 | Chang, Jonathan v 필리프스, 롤란드 | 6-1,6-1 | |
| ITF Canada F7 Qual | 09/09 21:00 | 44 | Chang, Jonathan v 파레, 프란시스 | 6-2,6-4 | |
| ITF Canada F6 | 09/06 15:30 | 26 | 엔구이엔, 다니엘 v Chang, Jonathan | 6-4,6-4 | |
| ITF Canada F6 | 09/04 17:10 | 25 | Chang, Jonathan v Kushnirovich, Gary | 6-4,3-6,6-1 | |
| ITF Canada F6 Qual | 09/03 17:55 | 44 | Chang, Jonathan v Ho, Denton | 6-1,6-1 | |
| ITF Canada F6 Qual | 09/02 21:00 | 44 | Chang, Jonathan v Leduc, Antoine | 5-7,6-2,6-4 | |
| ITF Canada F5 | 08/29 16:30 | 25 | Chang, Jonathan v 엔구이엔, 다니엘 | 3-6,2-6 | |
| ITF USA F27 Qual | 08/05 14:30 | 62 | Chang, Jonathan v Friedrich, Gabriel | 1-6,4-6 | |
| ITF USA F26 | 08/01 18:15 | 25 | Chang, Jonathan v 카루아나, 리암 | 1-6,1-6 | |
| ITF USA F25 | 07/25 14:00 | 25 | 부키크, 알렉산달 v Chang, Jonathan | 6-3,6-4 | |
| ITF USA F25 Qual | 07/24 16:20 | 62 | Chang, Jonathan v 리베이로 라고, 엘리오 조세 | 7-5,6-3 | |
| ITF USA F25 Qual | 07/23 13:30 | 62 | Chang, Jonathan v 엠하드트, 찰리 | 6-2,6-1 | |
| ITF USA F25 Qual | 07/22 14:30 | 62 | Chang, Jonathan v 왈드, 엠메트 | 6-2,6-1 | |
| ITF USA F24 Qual | 07/16 15:00 | 62 | Chang, Jonathan v Schorsch, Jeffrey | 5-7,1-6 | |
| ITF USA F24 Qual | 07/15 14:00 | 62 | Chang, Jonathan v Neff, Adam | 6-3,6-2 | |
| Challenger Winnetka Qual | 07/09 15:00 | 46 | Galloway, Robert v Chang, Jonathan | 7-6,6-2 | |
| ITF Canada F4 | 07/04 16:00 | 25 | Chang, Jonathan v 마르티네즈, 루이스 다비드 | 5-7,4-6 | |
| ITF Canada F3 | 06/27 19:10 | 25 | 사르미엔토, 라이몬드 v Chang, Jonathan | 6-3,6-4 | |
| ITF USA F19 Qual | 06/19 16:40 | 62 | Chang, Jonathan v Smith, Riley | 4-6,4-6 | |
| ITF USA F19 Qual | 06/18 14:00 | 62 | Chang, Jonathan v 디아스, 프란시스코 | 6-2,6-0 | |
| ITF USA F17 | 06/14 14:00 | 25 | Chang, Jonathan v 고죠, 보르나 | 3-6,2-6 | |
| ITF USA F16 | 05/03 15:45 | 25 | Trombetta, Ty v Chang, Jonathan | 7-6,4-6,7-5 | |
| ITF USA F16 | 05/01 13:00 | 60 | Chang, Jonathan v Barretto, Paul | 1-6,6-7 | |
| ITF USA F15 | 04/25 14:00 | 60 | Chang, Jonathan v Lipka, Dariusz | 3-6,4-6 | |
| ITF USA F15 | 04/23 15:00 | 60 | Chang, Jonathan v Kozlov, Boris | 6-4,3-6,6-3 | |
| ITF USA F15 | 04/22 18:00 | 60 | Chang, Jonathan v Davidson, Patrick | 7-6,6-4 | |
| ITF USA F15 | 04/21 15:30 | 60 | Chang, Jonathan v Paige, Nolan C | 5-7,6-4,6-3 | |
| ITF USA F14 | 04/17 13:30 | 60 | Chang, Jonathan v 벨로브, 세르게이 | 6-4,3-6,4-6 |