| Davise karikas | 09/15 02:00 | - | Hyeon Chung v Tung-Lin Wu | 7-6,6-1,6-1 | |
| Davise karikas | 09/15 02:00 | - | Hyeon Chung v Ti Chen | Cancelled | |
| USA lahtised meistrivõistlused | 08/30 21:10 | 24 | [47] Hyeon Chung v John Isner [15] | 3-6,4-6,5-7 | |
| USA lahtised meistrivõistlused | 08/28 15:00 | 23 | [58] Horacio Zeballos v Hyeon Chung [47] | 6-3,6-7,4-6,3-6 | |
| ATP Winston-Salem | 08/24 21:20 | 27 | [67] Damir Dzumhur v Hyeon Chung [49] | 6-4,6-2 | |
| ATP Winston-Salem | 08/23 22:50 | 26 | [49] Hyeon Chung v Julien Benneteau [107] | Retired | |
| ATP Winston-Salem | 08/22 23:55 | 25 | [49] Hyeon Chung v Andrey Rublev [54] | 5-7,6-1,6-1 | |
| ATP Cincinnati | 08/14 16:45 | 24 | [34] Feliciano Lopez v Hyeon Chung [49] | 7-6,6-1 | |
| ATP Montreal | 08/10 23:05 | 26 | [56] Hyeon Chung v Adrian Mannarino [42] | 3-6,3-6 | |
| ATP Montreal | 08/10 00:20 | 25 | [13] David Goffin v Hyeon Chung [56] | 5-7,3-6 | |
| ATP Montreal | 08/08 16:30 | 24 | [28] Feliciano Lopez v Hyeon Chung [56] | 1-6,6-4,6-7 | |
| ATP Washington | 08/02 01:50 | 24 | [56] Hyeon Chung v Kyle Edmund [41] | 3-6,1-6 | |
| ATP Atlanta | 07/24 22:35 | 25 | [53] Hyeon Chung v Tommy Paul [291] | 6-4,2-6,3-6 | |
| ATP Antalya | 06/27 07:00 | - | Hyeon Chung v Victor E Burgos | Cancelled | |
| ATP Den Bosch | 06/13 09:00 | 25 | Ernesto Escobedo v Hyeon Chung | Cancelled | |
| Prantsusmaa lahtised | 06/03 11:55 | 25 | [67] Hyeon Chung v Kei Nishikori [9] | 5-7,4-6,7-6,6-0,4-6 | |
| Prantsusmaa lahtised | 06/01 11:30 | 24 | [67] Hyeon Chung v Denis Istomin [80] | 6-1,7-5,6-1 | |
| Prantsusmaa lahtised | 05/30 10:35 | 23 | [28] Sam Querrey v Hyeon Chung [67] | 4-6,6-3,3-6,3-6 | |
| ATP Lyon | 05/24 16:00 | 26 | [14] Tomas Berdych v Hyeon Chung [68] | 6-3,7-5 | |
| ATP Lyon | 05/22 10:45 | 25 | [68] Hyeon Chung v Donald Young [51] | 6-2,6-3 | |
| ATP Lyon Qual | 05/21 09:00 | 46 | [66] Hyeon Chung v Quentin Halys [127] | 6-4,7-5 | |
| ATP Lyon Qual | 05/20 08:00 | 45 | Hyeon Chung v Michael Linzer | 6-4,6-2 | |
| Challenger - Seoul | 05/09 01:00 | 25 | Alexander Sarkissian v Hyeon Chung | Cancelled | |
| ATP München | 05/06 13:30 | 28 | [78] Hyeon Chung v Guido Pella [158] | 6-4,5-7,4-6 | |
| ATP München | 05/05 16:20 | 27 | [78] Hyeon Chung v Martin Klizan [53] | 6-4,3-6,6-2 | |
| ATP München | 05/04 12:30 | 26 | [16] Gael Monfils v Hyeon Chung [78] | 2-6,4-6 | |
| ATP München | 05/02 09:00 | 25 | [128] Maximilian Marterer v Hyeon Chung [78] | 6-7,6-4,3-6 | |
| ATP Barcelona | 04/28 15:30 | 27 | [94] Hyeon Chung v Rafael Nadal [5] | 6-7,2-6 | |
| ATP Barcelona | 04/27 15:20 | 26 | [21] Alexander Zverev v Hyeon Chung [94] | 1-6,4-6 | |
| ATP Barcelona | 04/26 13:50 | 25 | [94] Hyeon Chung v Philipp Kohlschreiber [31] | 6-3,6-4 |