 China: Shenzhen 3 - Doubles - Main |
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| Semi-finals | Shimizu Y./Trotter J. K. | Nam Ji S./Niklas-Salminen P. | 2:0 (6:3, 7:5) | details | 26.04.2024 |
| Quarter-finals | Bu Y./Zeng Y. | Nam Ji S./Niklas-Salminen P. | 1:2 (4:6, 6:3, 1:10) | details | 25.04.2024 |
| 1/8-finals | Haliak M./Sekulic P. | Nam Ji S./Niklas-Salminen P. | 1:2 (6:4, 4:6, 4:10) | details | 23.04.2024 |
 South Korea: Gwangju - Doubles - Main |
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| 1/8-finals | Chung Y./Hsu Y. H. | Ho R./Nam Ji S. | 2:0 (6:4, 7:64) | details | 17.04.2024 |
| South Korea: Busan - Doubles - Main |
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| Final | Ho R./Nam Ji S. | Chung Y./Hsu Y. H. | 2:0 (6:2, 6:4) | details | 14.04.2024 |
| Semi-finals | Bolt A./Tu L. | Ho R./Nam Ji S. | 0:2 (3:6, 4:6) | details | 12.04.2024 |
| Quarter-finals | Ho R./Nam Ji S. | Escoffier A./Wu Tung-Lin | 2:0 (6:4, 6:1) | details | 11.04.2024 |
| 1/8-finals | Ho R./Nam Ji S. | Noguchi R./Sakellaridis S. | 2:0 (6:4, 6:2) | details | 09.04.2024 |
 Japan: M15 Kashiwa - Doubles - Main |
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| Final | Imamura M./Takeru Y. | Ho R./Nam Ji S. | 2:1 (4:6, 6:2, 10:8) | details | 06.04.2024 |
| Semi-finals | Huang T./Jeong Y. | Ho R./Nam Ji S. | 1:2 (2:6, 6:4, 8:10) | details | 05.04.2024 |
| Quarter-finals | Kawachi K./Tokuda R. | Ho R./Nam Ji S. | WO. | details | 04.04.2024 |
| 1/8-finals | Delaney Ja./Sakellaridis S. | Ho R./Nam Ji S. | 1:2 (7:63, 3:6, 1:10) | details | 02.04.2024 |
| Japan: M15 Tsukuba - Doubles - Main |
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| Final | Ho R./Nam Ji S. | Kusuhara Y./Nakagawa S. | 0:2 (5:7, 64:7) | details | 30.03.2024 |
| Semi-finals | Ho R./Nam Ji S. | Huang T./Masabayashi T. | 2:1 (6:4, 2:6, 10:7) | details | 29.03.2024 |
| Quarter-finals | Ho R./Nam Ji S. | Nakamura G./Tanaka Y. | 2:0 (6:2, 6:1) | details | 28.03.2024 |
| 1/8-finals | Ho R./Nam Ji S. | Fukuda S./Han Seon Yong | 2:0 (6:4, 6:3) | details | 27.03.2024 |
 Australia: M25 Mildura - Doubles - Main |
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| Quarter-finals | Delaney Ja./Saville L. | Nam Ji S./Shin S. | 2:0 (7:69, 6:4) | details | 14.03.2024 |
| 1/8-finals | Hahn J./Joyce J. | Nam Ji S./Shin S. | 0:2 (4:6, 4:6) | details | 13.03.2024 |
 France: Lille - Doubles - Main |
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| 1/8-finals | Nam Ji S./Shimabukuro S. | Eysseric J./Olivetti A. | 0:2 (4:6, 66:7) | details | 28.02.2024 |
 Spain: Tenerife 2 - Doubles - Main |
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| Quarter-finals | Arends S./Verbeek S. | Nam Ji S./Stevenson K. | 2:0 (6:3, 6:2) | details | 22.02.2024 |
| 1/8-finals | Nam Ji S./Stevenson K. | Giannessi A./Rodriguez Taverna S. | 2:0 (7:63, 7:5) | details | 20.02.2024 |
| France: Cherbourg - Doubles - Main |
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| 1/8-finals | Nam Ji S./Stevenson K. | Bellucci M./Mpetshi Perricard G. | 0:2 (4:6, 4:6) | details | 13.02.2024 |
 World: Davis Cup - World Group - Doubles - Qualification |
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| | Galarneau A./Pospisil V. | Nam Ji S./Song M.-K. | 1:2 (4:6, 7:64, 3:6) | details | 03.02.2024 |
 Thailand: Nonthaburi 3 - Doubles - Main |
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| 1/8-finals | Matsui T./Uesugi K. | Hach Verdugo H./Nam Ji S. | 2:0 (6:3, 6:4) | details | 17.01.2024 |
| Thailand: Nonthaburi 2 - Doubles - Main |
|---|
| Quarter-finals | Alcantara F. C./Sun F. | Hach Verdugo H./Nam Ji S. | 2:0 (6:1, 6:2) | details | 11.01.2024 |
| 1/8-finals | Isaro P./Jones M. | Hach Verdugo H./Nam Ji S. | 0:2 (3:6, 3:6) | details | 09.01.2024 |
| Thailand: Nonthaburi - Doubles - Main |
|---|
| Quarter-finals | Alcantara F. C./Uchida K. | Hach Verdugo H./Nam Ji S. | 2:0 (6:2, 7:5) | details | 04.01.2024 |
| 1/8-finals | Castelnuovo L./Poullain L. | Hach Verdugo H./Nam Ji S. | 0:2 (5:7, 61:7) | details | 03.01.2024 |
| 1/8-finals | Hong S. C./Uchiyama Y. | Hach Verdugo H./Nam Ji S. | CAN. | details | 03.01.2024 |
| Japan: Yokkaichi - Doubles - Main |
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| Quarter-finals | King E./Stalder R. | Nam Ji S./Wong C. | 2:1 (6:4, 66:7, 12:10) | details | 30.11.2023 |
| 1/8-finals | Nam Ji S./Wong C. | Gonzales R./Sun F. | 2:0 (6:3, 6:4) | details | 29.11.2023 |
| Japan: Yokohama - Doubles - Main |
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| Quarter-finals | Chung Y./Gonzales R. | Harris A./Nam Ji S. | 2:0 (7:67, 6:3) | details | 23.11.2023 |
| 1/8-finals | Kaliyanda Poonacha N./Sharan D. | Harris A./Nam Ji S. | 1:2 (65:7, 6:4, 9:11) | details | 22.11.2023 |
| Japan: Kobe - Doubles - Main |
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| Final | King E./Stalder R. | Harris A./Nam Ji S. | 2:1 (7:63, 2:6, 10:7) | details | 18.11.2023 |
| Semi-finals | Chung Y./Gonzales R. | Harris A./Nam Ji S. | 0:2 (65:7, 63:7) | details | 17.11.2023 |
| Quarter-finals | Jung J./Wu Tung-Lin | Harris A./Nam Ji S. | 0:2 (4:6, 5:7) | details | 16.11.2023 |
| 1/8-finals | Ho R./Romios M. C. | Harris A./Nam Ji S. | 1:2 (6:1, 1:6, 3:10) | details | 15.11.2023 |
| Japan: Matsuyama - Doubles - Main |
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| Semi-finals | Nam Ji S./Uchida K. | Matsui T./Uesugi K. | 1:2 (3:6, 7:66, 10:12) | details | 10.11.2023 |
| Quarter-finals | Raja P./Ramanathan R. | Nam Ji S./Uchida K. | 0:2 (2:6, 4:6) | details | 09.11.2023 |
| 1/8-finals | Hong S. C./Jung J. | Nam Ji S./Uchida K. | 0:2 (5:7, 4:6) | details | 08.11.2023 |
| 1/8-finals | Kono Y./Kusuhara Y. | Nam Ji S./Uchida K. | CAN. | details | 08.11.2023 |