ITF Korea F8 08/25 02:00 27 Ju-Hae Moon v Ji Sung Nam 3-6,2-6
ITF Korea F8 08/24 03:45 26 Ji Sung Nam v Sanhui Shin 7-6,7-5
ITF Korea F8 08/22 02:30 25 Hyun-Woo Nam v Ji Sung Nam Retired
ITF Korea F1 06/17 01:00 27 Ji Sung Nam v Min Hyeok Cho 7-6,2-6,2-6
ITF Korea F1 06/16 02:50 26 Ji Sung Nam v Dong-Kyu Lee 7-5,6-1
ITF Korea F1 06/15 06:35 25 Soonwoo Kwon v Ji Sung Nam 7-5,2-6,3-6
ITF Korea F1 05/22 04:55 - Ilya Ivashka v Ji Sung Nam 6-3,4-6,6-1
ITF Korea F1 05/21 05:50 - Ji Sung Nam v Philip Bester Walkover
ITF Korea F1 05/20 02:00 - Ji Sung Nam v Sang-Woo Noh 6-2,6-4
ITF Thailand F9 04/27 03:00 - Gengo Kikuchi v Ji Sung Nam 6-4,6-7,6-3
ITF Thailand F9 04/21 06:50 - Akira Santillan v Ji Sung Nam 7-6,6-1
Davis Cup 03/08 05:15 1 Warit Sornbutnark v Ji Sung Nam 6-4,6-3
ITF USA F4 01/15 18:00 - Alexander Sarkissian v Ji Sung Nam 6-4,6-2
ITF USA F4 01/14 18:00 - Ji Sung Nam v Marcos Giron 6-4,6-2
ITF USA F2 01/07 19:20 - Ji Sung Nam v Alexander Sarkissian 7-6,7-5
ITF China F9 07/25 03:30 - Ji Sung Nam v Nikola Milojevic 2-6,7-6,5-7
ITF China F9 07/24 02:00 - Takuto Niki v Ji Sung Nam 5-7,4-6
ITF China F9 07/23 03:40 - Weiqiang Zheng v Ji Sung Nam 2-6,2-6
ITF China F9 07/21 03:25 - Hanxiang Chen v Ji Sung Nam 4-6,2-6
Challenger Kaohsiung 07/15 07:40 25 Ji Sung Nam v Yuichi Sugita 4-6,2-6
ITF Korea F1 Qual 05/02 02:00 - Min Hyeok Cho v Ji Sung Nam 6-4,6-7,6-2
ITF Korea F1 Qual 05/01 03:00 - Cheong-Eui Kim v Ji Sung Nam 1-6,7-5,2-6
ITF Korea F1 Qual 04/30 01:00 - Ji Sung Nam v Seong Chan Hong 6-0,6-2
ITF Korea F1 04/25 03:00 - Hyeon Chung v Ji Sung Nam 6-0,6-0
ITF Korea F1 04/24 01:00 - Ji Sung Nam v Jung-Woong Na 7-5,6-2
ITF Korea F1 04/22 01:00 - Ji Sung Nam v Hyun-Woo Nam Retired
ITF China F3 03/19 02:00 - Ji Sung Nam v Xin Gao Retired
ITF China F2 03/13 04:00 - Ze Zhang v Ji Sung Nam 2-6,6-2,6-2
ITF China F2 03/12 04:40 - Bowen Ouyang v Ji Sung Nam 1-6,6-7
ITF China F1 03/06 02:00 - Ji Sung Nam v Yan Bai 6-3,3-6,4-6

Wikipedia - Nam Ji-sung

Nam Ji-sung (born 15 August 1993) is a South Korean tennis player. He has a career high ATP singles ranking of world No. 236 achieved on 12 August 2019. He also has a career high ATP doubles ranking of No. 102 achieved on 3 February 2020. In 2024, he became the first Korean in 13 years to win the Busan Open in doubles.

Playing for South Korea in Davis Cup, Nam has a W/L record of 3–7.