ITF Canada F7 09/13 15:40 26 Sam Barry v Jonathan Chang 6-3,6-3
ITF Canada F7 09/12 17:15 25 Winston Lin v Jonathan Chang 2-6,1-6
ITF Canada F7 Qual 09/10 16:15 44 Jonathan Chang v Rowland Phillips 6-1,6-1
ITF Canada F7 Qual 09/09 21:00 44 Jonathan Chang v Francis Pare 6-2,6-4
ITF Canada F6 09/06 15:30 26 Daniel Nguyen v Jonathan Chang 6-4,6-4
ITF Canada F6 09/04 17:10 25 Jonathan Chang v Gary Kushnirovich 6-4,3-6,6-1
ITF Canada F6 Qual 09/03 17:55 44 Jonathan Chang v Denton Ho 6-1,6-1
ITF Canada F6 Qual 09/02 21:00 44 Jonathan Chang v Antoine Leduc 5-7,6-2,6-4
ITF Canada F5 08/29 16:30 25 Jonathan Chang v Daniel Nguyen 3-6,2-6
ITF USA F27 Qual 08/05 14:30 62 Jonathan Chang v Gabriel Friedrich 1-6,4-6
ITF USA F26 08/01 18:15 25 Jonathan Chang v Liam Caruana 1-6,1-6
ITF USA F25 07/25 14:00 25 Aleksandar Vukic v Jonathan Chang 6-3,6-4
ITF USA F25 Qual 07/24 16:20 62 Jonathan Chang v Elio Jose Ribeiro Lago 7-5,6-3
ITF USA F25 Qual 07/23 13:30 62 Jonathan Chang v Charley Emhardt 6-2,6-1
ITF USA F25 Qual 07/22 14:30 62 Jonathan Chang v Emmett Ward 6-2,6-1
ITF USA F24 Qual 07/16 15:00 62 Jonathan Chang v Jeffrey Schorsch 5-7,1-6
ITF USA F24 Qual 07/15 14:00 62 Jonathan Chang v Adam Neff 6-3,6-2
Challenger Winnetka Qual 07/09 15:00 46 Robert Galloway v Jonathan Chang 7-6,6-2
ITF Canada F4 07/04 16:00 25 Jonathan Chang v Luis David Martinez 5-7,4-6
ITF Canada F3 06/27 19:10 25 Raymond Sarmiento v Jonathan Chang 6-3,6-4
ITF USA F19 Qual 06/19 16:40 62 Jonathan Chang v Riley Smith 4-6,4-6
ITF USA F19 Qual 06/18 14:00 62 Jonathan Chang v Francisco Dias 6-2,6-0
ITF USA F17 06/14 14:00 25 Jonathan Chang v Borna Gojo 3-6,2-6
ITF USA F16 05/03 15:45 25 Ty Trombetta v Jonathan Chang 7-6,4-6,7-5
ITF USA F16 05/01 13:00 60 Jonathan Chang v Paul Barretto 1-6,6-7
ITF USA F15 04/25 14:00 60 Jonathan Chang v Dariusz Lipka 3-6,4-6
ITF USA F15 04/23 15:00 60 Jonathan Chang v Boris Kozlov 6-4,3-6,6-3
ITF USA F15 04/22 18:00 60 Jonathan Chang v Patrick Davidson 7-6,6-4
ITF USA F15 04/21 15:30 60 Jonathan Chang v Nolan C. Paige 5-7,6-4,6-3
ITF USA F14 04/17 13:30 60 Jonathan Chang v Sergey Belov 6-4,3-6,4-6