Name: Ji Sung Nam
Country: Republic of Korea
Birthdate: 15.08.93, 30 years
ATP ranking: 645
TOP ranking's position: 236 (12.08.19, 189 points)
Points: 48
Prize money: 248024 $
Matches total: 480
Win: 272
%: 56.67 %
Country: Republic of Korea
Birthdate: 15.08.93, 30 years
ATP ranking: 645
TOP ranking's position: 236 (12.08.19, 189 points)
Points: 48
Prize money: 248024 $
Matches total: 480
Win: 272
%: 56.67 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2023 | 7/17 | 5/12 | 2/4 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2022 | 26/19 | 24/13 | 2/4 | 0/2 | 0/0 | 0/0 | 0/0 |
| 2021 | 4/7 | 2/6 | 0/0 | 1/1 | 0/0 | 1/0 | 0/0 |
| 2020 | 3/6 | 1/2 | 0/1 | 2/3 | 0/0 | 0/0 | 0/0 |
| 2019 | 41/24 | 34/21 | 1/1 | 3/1 | 3/1 | 0/0 | 0/0 |
| 2018 | 40/13 | 37/10 | 3/2 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2017 | 7/2 | 7/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2016 | 23/9 | 14/7 | 9/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2015 | 19/17 | 17/15 | 2/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2014 | 36/23 | 31/19 | 2/3 | 0/0 | 3/1 | 0/0 | 0/0 |
| 2013 | 30/24 | 27/21 | 0/1 | 1/1 | 2/1 | 0/0 | 0/0 |
| 2012 | 27/25 | 20/20 | 5/0 | 2/4 | 0/0 | 0/1 | 0/0 |
| 2011 | 5/15 | 2/10 | 0/3 | 1/1 | 2/1 | 0/0 | 0/0 |
| 2010 | 3/6 | 3/5 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2009 | 1/1 | 1/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 272/208 | 225/164 | 26/23 | 10/15 | 10/5 | 1/1 | 0/0 |
| perc. % | 56.67 % | 57.84 % | 53.06 % | 40 % | 66.67 % | 50 % | 0 % |
Ji Sung Nam / scheduled / last
| no matches found |
Ji Sung Nam form
Ji Sung Nam / last 50 matches
| 13.08.23 | q 1 | Mats Rosenkranz | Ji Sung Nam | 6-2, 6-3 |  | match details |  Grodzisk Mazowiecki | Hard |
| 08.08.23 | qual. | Orlando Luz | Ji Sung Nam | 4-6, 6-4, 6-4 | | match details |  Meerbusch Challenger | Clay |
| 07.08.23 | q 1 | Ji Sung Nam | Aaron James Williams | 6-4, 6-74, 6-1 |  | match details | ||
| 30.07.23 | q 1 | Jaime Faria | Ji Sung Nam | 6-4, 6-4 | | match details |  Porto Challenger | Hard |
| 16.07.23 | q 1 | Fajing Sun | Ji Sung Nam | 7-65, 6-1 | | match details |  Pozoblanco Challenger | Hard |
| 03.07.23 | q 1 | Evan Zhu | Ji Sung Nam | 6-1, 6-4 | | match details |  Bloomfield Hills | Hard |
| 18.06.23 | q 1 | Frazier Rengifo | Ji Sung Nam | 6-4, 6-2 | | match details |  Cali Challenger | Clay |
| 11.06.23 | q 1 | Gustavo Heide | Ji Sung Nam | 6-4, 6-4 | | match details |  Palmas del | Hard |
| 09.05.23 | 1st round | Gabriel Diallo | Ji Sung Nam | 6-3, 6-3 | | match details |  Busan Challenger | Hard |
| 01.05.23 | qual. | Dominik Palan | Ji Sung Nam | 6-4, 6-3 | | match details | Gwangju Challenger | Hard |
| 30.04.23 | q 1 | Ji Sung Nam | Ajeet Rai | 5-7, 6-1, 6-2 | | match details | ||
| 26.04.23 | 1st round | Max Purcell | Ji Sung Nam | 6-3, 6-4 | | match details | Seoul Challenger | Hard |
| 24.04.23 | qual. | Ji Sung Nam | Shinji Hazawa | 6-2, 6-4 | | match details | ||
| 23.04.23 | q 1 | Ji Sung Nam | Hiroki Moriya | 6-2, 6-2 | | match details | ||
| 09.04.23 | q 1 | Viktor Durasovic | Ji Sung Nam | 4-6, 7-63, 7-69 | | match details | Madrid Challenger | Clay |
| 03.04.23 | qual. | Edas Butvilas | Ji Sung Nam | 2-6, 6-3, 6-1 | | match details | Murcia Challenger | Clay |
| 02.04.23 | q 1 | Ji Sung Nam | Daniel Rincon | 6-3, 6-2 | | match details | ||
| 26.03.23 | q 1 | Beibit Zhukayev | Ji Sung Nam | 6-1, 6-711, 6-3 | | match details |  Lille Challenger | I. hard |
| 05.03.23 | q 1 | Guido Andreozzi | Ji Sung Nam | 6-3, 6-1 | | match details |  Puerto Vallarta | Hard |
| 13.02.23 | qual. | Sumit Nagal | Ji Sung Nam | 6-1, 6-3 | | match details |  Chennai Challenger | Hard |
| 12.02.23 | q 1 | Ji Sung Nam | Giovanni Mpetshi Perricard | 6-4, 6-4 | | match details | ||
| 15.01.23 | q 1 | Giovanni Fonio | Ji Sung Nam | 4-6, 6-4, 6-2 | | match details |  Nonthaburi 3 | Hard |
| 02.01.23 | qual. | Alafia Ayeni | Ji Sung Nam | 6-3, 6-4 | | match details | Nonthaburi 1 | Hard |
| 01.01.23 | q 1 | Ji Sung Nam | Oleksandr Ovcharenko | 6-3, 6-1 | | match details | ||
| 13.11.22 | q 1 | Renta Tokuda | Ji Sung Nam | 6-4, 6-1 | | match details |  Kobe Challenger | I. hard |
| 07.11.22 | qual. | Jason Jung | Ji Sung Nam | 6-3, 6-4 | | match details | Matsuyama Challenger | Hard |
| 06.11.22 | q 1 | Ji Sung Nam | Jonathan Mridha | 7-62, 6-3 | | match details | ||
| 29.10.22 | q 1 | Taisei Ichikawa | Ji Sung Nam | 7-68, 7-5 | | match details | Yokohama Challenger | Hard |
| 19.10.22 | 2nd round | Christopher O'Connell | Ji Sung Nam | 6-3, 6-2 | | match details | Busan Challenger | Hard |
| 18.10.22 | 1st round | Ji Sung Nam | Kaichi Uchida | 6-3, 6-3 | | match details | ||
| 07.10.22 | 1/4 | Emilio Gomez | Ji Sung Nam | 6-1, 1-6, 6-1 | | match details | Gwangju Challenger | Hard |
| 05.10.22 | 2nd round | Ji Sung Nam | Yibing Wu | 6-4, 6-2 | | match details | ||
| 04.10.22 | 1st round | Ji Sung Nam | Yunseong Chung | 1-6, 6-3, 7-5 | | match details | ||
| 03.10.22 | qual. | Ji Sung Nam | Shinji Hazawa | 6-1, 7-63 | | match details | ||
| 02.10.22 | q 1 | Ji Sung Nam | Hoyoung Roh | 6-2, 6-1 | | match details | ||
| 27.09.22 | 1st round | Steve Johnson | Ji Sung Nam | 7-63, 6-4 | | match details | Seoul | Hard |
| 21.08.22 | q 1 | Valentin Vacherot | Ji Sung Nam | 3-0, Ji Sung Nam - retired | | match details | Nonthaburi 1 | Hard |
| 21.07.22 | 2nd round | Benjamin Lock | Ji Sung Nam | 6-2, 6-1 | | match details |  Nur Sultan | Hard |
| 19.07.22 | 1st round | Ji Sung Nam | Timofey Skatov | 7-64, 4-6, 7-5 | | match details | ||
| 18.07.22 | qual. | Ji Sung Nam | Saba Purtseladze | 3-6, 7-5, 6-0 | | match details | ||
| 17.07.22 | q 1 | Ji Sung Nam | Alexander Zgirovsky | 6-1, 6-1 | | match details | ||
| 11.06.22 | 1/2 | Sho Shimabukuro | Ji Sung Nam | 6-1, 6-73, 6-3 | | match details |  M25 Harmon | Hard |
| 10.06.22 | 1/4 | Ji Sung Nam | Ko Suzuki | 6-3, 6-4 | | match details | ||
| 09.06.22 | 2nd round | Ji Sung Nam | Toshihide Matsui | 6-4, 6-3 | | match details | ||
| 07.06.22 | 1st round | Ji Sung Nam | Eric Padgham | 6-2, 6-2 | | match details | ||
| 03.06.22 | 1/4 | Seong Chan Hong | Ji Sung Nam | 6-2, 5-7, 6-1 | | match details | M25 Harmon | Hard |
| 02.06.22 | 2nd round | Ji Sung Nam | Mao Takada | 6-1, 6-0 | | match details | ||
| 01.06.22 | 1st round | Ji Sung Nam | Ren Nakamura | 6-4, 6-4 | | match details | ||
| 20.04.22 | 1st round | Kasidit Samrej | Ji Sung Nam | 2-6, 6-2, 6-4 | | match details | M15 Chiang | Hard |
| 16.04.22 | 1/2 | Seong Chan Hong | Ji Sung Nam | 6-1, 6-2 | | match details | M15 Chiang | Hard |