| Challenger Gimcheon |
05/04 06:00 |
26 |
Pelle Boerma
v
Duckhee Lee |
6-3,6-2
|
|
| Challenger Gimcheon |
05/02 05:55 |
25 |
Tatsuma Ito
v
Duckhee Lee |
6-4,3-6,4-6
|
|
| Challenger Taipei |
04/17 11:20 |
25 |
Ramkumar Ramanathan
v
Duckhee Lee |
2-6,6-2,6-4
|
|
| ATP Marrakech Qual |
04/09 13:40 |
46 |
Gianluigi Quinzi
v
Duckhee Lee |
6-2,6-3
|
|
| ATP Marrakech Qual |
04/08 14:00 |
45 |
Tallinna JK Dunamo
v
Duckhee Lee |
3-6,1-6
|
|
| Challenger Sophia Antipolis |
04/05 11:40 |
26 |
Duckhee Lee v
Jozef Kovalik
|
7-5,4-6,4-6
|
|
| Challenger Sophia Antipolis |
04/04 12:00 |
25 |
Duckhee Lee v
Constant Lestienne
|
Retired
|
|
| Challenger Quanzhou |
03/23 07:15 |
27 |
Matteo Berrettini
v
Duckhee Lee |
6-4,6-7,6-1
|
|
| Challenger Quanzhou |
03/23 01:30 |
26 |
Di Wu
v
Duckhee Lee |
6-7,7-6,2-6
|
|
| Challenger Quanzhou |
03/20 05:40 |
25 |
Rigele Te
v
Duckhee Lee |
4-6,6-7
|
|
| Challenger Shenzhen |
03/17 05:35 |
27 |
Duckhee Lee v
Luca Vanni
|
1-6,3-6
|
|
| Challenger Shenzhen |
03/16 02:00 |
26 |
Duckhee Lee v
Hubert Hurkacz
|
6-3,2-6,7-6
|
|
| Challenger Shenzhen |
03/14 06:00 |
25 |
Duckhee Lee v
Tatsuma Ito
|
6-1,5-7,6-4
|
|
| Challenger Zhuhai |
03/06 07:40 |
25 |
[135] Duckhee Lee v
Stefano Napolitano
[174] 
|
4-6,6-7
|
|
| Challenger Yokohama |
02/28 02:50 |
25 |
Duckhee Lee v
Marko Tepavac
|
5-7,7-6,1-6
|
|
| Challenger Cherbourg |
02/15 19:15 |
26 |
Mathias Bourgue
v
Duckhee Lee |
6-4,6-4
|
|
| Challenger Cherbourg |
02/14 14:55 |
25 |
Scholl/Zacarias
v
Duckhee Lee |
1-6,4-6
|
|
| Challenger Budapest |
02/08 09:30 |
25 |
Casper Ruud
v
Duckhee Lee |
7-5,6-2
|
|
| Davis Cup |
02/03 05:40 |
27 |
Duck Hee Lee v
Denis Istomin
|
6-4,2-6,6-7,4-6
|
|
| Challenger Rennes |
01/27 15:35 |
27 |
Andrey Rublev
v
Duckhee Lee |
6-4,3-6,6-4
|
|
| Challenger Rennes |
01/26 12:40 |
26 |
Duckhee Lee v
Lukas Rosol
|
6-3,4-6,6-3
|
|
| Challenger Rennes |
01/25 10:00 |
25 |
Daniel Brands
v
Duckhee Lee |
5-7,4-6
|
|
| Australian Open 2017 Qual |
01/14 05:10 |
46 |
Duckhee Lee v
Alexander Bublik
|
6-4,4-6,4-6
|
|
| Australian Open 2017 Qual |
01/13 08:50 |
45 |
Duckhee Lee v
Bradley Mousley
|
6-7,6-0,6-2
|
|
| Australian Open 2017 Qual |
01/11 07:35 |
44 |
Nicolas Kicker
v
Duckhee Lee |
7-5,5-7,1-6
|
|
| Challenger Noumea |
01/02 23:00 |
25 |
Duckhee Lee v
Cameron Norrie
|
4-6,4-6
|
|
| Australian Open 2017 WC |
12/04 06:20 |
29 |
Denis Istomin
v
Duckhee Lee |
7-5,6-1
|
|
| Australian Open 2017 WC |
12/03 07:00 |
28 |
Di Wu
v
Duckhee Lee |
2-6,7-5,5-7
|
|
| Australian Open 2017 WC |
12/02 04:15 |
27 |
Ruben Gonzales
v
Duckhee Lee |
6-4,3-6,4-6
|
|
| Australian Open 2017 WC |
11/30 02:45 |
26 |
Xi Qi
v
Duckhee Lee |
2-6,6-4,1-6
|
|