Challenger Ningbo 10/20 06:00 26 Daniel Masur v Duckhee Lee 3-6,1-6
Challenger Ningbo 10/18 03:40 25 Yannick Hanfmann v Duckhee Lee 2-6,4-6
ITF M25 Tbilisi 10/01 07:00 45 Duckhee Lee v Vasek Pospisil 7-6,6-7,3-6
Challenger Kaohsiung 09/25 08:25 29 Duck Hee Lee v Hyeon Chung 4-6,2-6
Challenger Kaohsiung 09/24 07:20 28 Duck Hee Lee v Yuichi Sugita 6-2,6-3
Challenger Kaohsiung 09/23 06:00 27 Yasutaka Uchiyama v Duck Hee Lee 4-6,4-6
Challenger Kaohsiung 09/22 06:00 26 Duck Hee Lee v Takuto Niki 6-4,6-3
Challenger Kaohsiung 09/20 04:35 25 Hiroki Moriya v Duck Hee Lee 6-7,4-6
Challenger Nanchang 09/13 02:00 25 Duckhee Lee v Zihao Xia 6-1,5-7,3-6
Challenger Bangkok 4 08/30 09:40 25 Duckhee Lee v Prajnesh Gunneswaran 4-6,0-6
US Open - Qual. 08/25 23:35 45 Steve Darcis v Duckhee Lee 6-4,7-6
US Open - Qual. 08/24 20:10 44 Rubin Statham v Duckhee Lee 6-7,3-6
Challenger Astana 2 07/29 05:00 27 Duckhee Lee v Konstantin Kravchuk 4-6,6-7
Challenger Astana 2 07/28 07:25 26 Duckhee Lee v Ante Pavic 6-1,6-2
Challenger Astana 2 07/26 05:00 25 Duckhee Lee v Michal Przysiezny 7-5,6-0
ITF Cina F10 07/03 02:00 29 Zhe Li v Duckhee Lee 4-6,4-6
ITF Cina F10 07/02 04:00 28 Yan Bai v Duckhee Lee Walkover
ITF Cina F10 07/01 02:00 27 Yecong He v Duckhee Lee Walkover
ITF Cina F10 06/30 02:00 26 Fajing Sun v Duckhee Lee 3-6,5-7
ITF Cina F10 06/29 02:50 25 Karunuday Singh v Duckhee Lee 2-6,4-6
ITF Giappone F6 06/05 02:00 29 Duckhee Lee v Yasutaka Uchiyama 7-6,6-3
ITF Giappone F6 06/04 02:50 28 Duckhee Lee v Deiton Baughman 6-4,6-2
ITF Giappone F6 06/03 01:00 27 Duckhee Lee v Yuya Kibi 6-3,7-6
ITF Giappone F6 06/02 02:50 26 Duckhee Lee v Yusuke Takahashi 6-3,6-0
ITF Giappone F6 05/31 04:00 25 Duckhee Lee v Masaya Kobayashi 6-1,6-1
ITF Cina F8 05/24 04:05 25 Duckhee Lee v Akira Santillan 4-6,6-7
Open di Francia - Qual. 05/16 12:50 44 Duckhee Lee v Saketh Myneni 6-1,6-7,4-6
ITF Cina F4 04/10 03:00 29 Duckhee Lee v Jimmy Wang 5-7,3-6
ITF Cina F4 04/09 09:30 28 Duckhee Lee v N.Sriram Balaji 6-2,6-2
ITF Cina F4 04/09 04:20 27 Duckhee Lee v Chuhan Wang 6-1,7-6