| Challenger Liuzhou |
10/24 06:00 |
26 |
[89] Radu Albot
v
Duckhee Lee [197] |
6-2,7-5
|
|
| Challenger Liuzhou |
10/22 04:15 |
25 |
[197] Duckhee Lee v
Tsung-Hua Yang
[270] |
6-2,6-3
|
|
| Challenger Tashkent |
10/08 14:10 |
25 |
[233] Evgeny Karlovskiy
v
Duckhee Lee [205] |
7-6,6-4
|
|
| Challenger Kaohsiung |
09/22 08:10 |
28 |
[42] Gael Monfils
v
Duckhee Lee [232] |
6-1,6-1
|
|
| Challenger Kaohsiung |
09/21 12:05 |
27 |
[232] Duckhee Lee v
Frederico Ferreira Silva
[310] |
6-2,7-5
|
|
| Challenger Kaohsiung |
09/20 10:00 |
26 |
[123] Jason Jung
v
Duckhee Lee [232] |
6-7,4-6
|
|
| Challenger Kaohsiung |
09/19 08:50 |
25 |
[267] Tomislav Brkic
v
Duckhee Lee [232] |
2-6,6-7
|
|
| Davis Cup |
09/15 03:35 |
29 |
[231] Duckhee Lee v
Rubin Statham
[207] |
6-4,6-1
|
|
| Davis Cup |
09/14 04:05 |
29 |
[231] Duck Hee Lee v
Michael Venus
[15] |
7-5,6-7,6-2
|
|
| Challenger Zhangjiagang |
09/06 04:20 |
26 |
[204] Uladzimir Ignatik
v
Duckhee Lee [229] |
7-6,6-1
|
|
| Challenger Zhangjiagang |
09/04 07:30 |
25 |
[229] Duckhee Lee v
Ze Zhang
[168] |
6-3,5-7,6-0
|
|
| Challenger Gwangju |
08/17 02:00 |
27 |
[241] Duckhee Lee v
Makoto Ochi
[438] |
2-6,1-6
|
|
| Challenger Gwangju |
08/15 06:00 |
26 |
[241] Duckhee Lee v
Rubin Statham
[232] |
6-4,6-3
|
|
| Challenger Gwangju |
08/14 06:30 |
25 |
Duckhee Lee v
Hong Chung
|
7-6,6-2
|
|
| Challenger Jinan |
08/10 07:30 |
27 |
[305] James Ward
v
Duck Hee Lee [239] |
3-6,7-5,6-4
|
|
| Challenger Jinan |
08/08 12:40 |
26 |
[239] Duck Hee Lee v
Yibing Wu
[329] 
|
6-0,6-3
|
|
| Challenger Jinan |
08/07 02:00 |
25 |
Manish Sureshkumar
v
Duck Hee Lee |
1-6,3-6
|
|
| Challenger Chengdu |
08/02 08:05 |
26 |
[240] Duckhee Lee v
James Ward
[329] |
6-4,5-7,3-6
|
|
| Challenger Chengdu |
07/31 06:05 |
25 |
[161] Nikola Milojevic
v
Duckhee Lee [240] |
4-6,4-6
|
|
| Challenger Astana |
07/19 07:50 |
26 |
[228] Duckhee Lee v
Pavel Kotov
[445] 
|
7-5,6-7,5-7
|
|
| Challenger Astana |
07/17 11:10 |
25 |
Duckhee Lee v
Sagadat Ayap
|
6-4,6-2
|
|
| Wimbledon Qual |
06/25 16:35 |
44 |
Attila Balazs
v
Duckhee Lee |
6-3,5-7,6-1
|
|
| ATP Antalya Qual |
06/23 11:00 |
64 |
[302] Filip Horansky
v
Duckhee Lee [233] |
7-5,6-2
|
|
| Challenger Fergana |
06/20 08:15 |
26 |
[289] Aldin Setkic
v
Duckhee Lee [233] |
6-2,6-3
|
|
| Challenger Fergana |
06/18 09:05 |
25 |
[312] Yusuke Takahashi
v
Duckhee Lee [233] |
6-7,1-6
|
|
| Challenger Almaty |
06/12 07:40 |
25 |
[229] Duckhee Lee v
Roberto Cid Subervi
[248] |
5-7,5-7
|
|
| French Open Qual |
05/25 08:00 |
46 |
[155] Jaume Munar
v
Duckhee Lee [242] |
6-7,6-0,7-6
|
|
| French Open Qual |
05/23 14:40 |
45 |
[242] Duckhee Lee v
Lorenzo Sonego
[126] 
|
6-3,6-4
|
|
| French Open Qual |
05/21 12:10 |
44 |
[186] Dennis Novikov
v
Duckhee Lee [242] |
2-6,2-6
|
|
| Challenger Busan |
05/17 05:20 |
26 |
[188] Filip Peliwo
v
Duckhee Lee [246] |
4-6,6-2,6-4
|
|