Ji Sung Nam

986 ATP ranking 19 points 32 years 183 cm Right handed

Match log

2026

Prostejov CH, challenger Clay, June
Q1 L Jan Kumstat 4-6 4-6
Vicenza CH, challenger Clay, May
Q1 L Laurent Lokoli 5-7 4-6
Busan CH, challenger Hard, April
Q1 L Marat Sharipov 3-6 2-6
Miyazaki CH, challenger Hard, March
R32 L Braden Shick 4-6 2-6
Q2 W Yuta Kikuchi 6-4 6-4
Q1 W Takuya Kumasaka 6-2 6-4
Phan Thiet 2 CH, challenger Hard, January
Q1 L Marek Gengel 3-6 4-6
Nonthaburi 1 CH, challenger Hard, January
Q1 L Kokoro Isomura 6-1 6-7(6) 4-6

2025

Yokohama CH, challenger Hard, November
Q2 L Igor Ribeiro Marcondes 4-6 4-6
Q1 W Nathan Trouve 6-0 6-1
Kobe CH, challenger Hard, November
R32 L Hynek Barton 7-6(8) 4-6 6-7(6)
Q2 W Duje Ajdukovic 6-4 5-7 6-4
Q1 W Tsung Hao Huang 6-2 6-3
Taipei CH, challenger Hard, November
R32 L Jurij Rodionov 6-2 6-7(3) 2-6
Q2 W Takeru Yuzuki 7-6(5) 6-1
Q1 W Ren Nakamura 6-1 6-2
Seoul CH, challenger Hard, October
Q2 L Uisung Park 4-6 1-6
Q1 W Neil Oberleitner 6-3 4-6 6-1
Zhangjiagang CH, challenger Hard, August
Q2 L Tsung Hao Huang 2-6 4-6
Q1 W Niki Kaliyanda Poonacha 6-4 0-0 RET
Grodzisk Mazowiecki CH, challenger Hard, August
Q1 L Rafael Jodar 0-6 3-6
Zug CH, challenger Clay, July
Q1 L Lukas Pokorny 6-4 2-6 1-6
Gwangju CH, challenger Hard, April
Q1 L Petr Bar Biryukov 7-6(2) 1-5 RET
Busan CH, challenger Hard, April
Q1 L Marat Sharipov 5-7 1-6

2024

Yokkaichi CH, challenger Hard, November
Q1 L Keisuke Saitoh 1-6 3-6
Yokohama CH, challenger Hard, November
R32 L Shintaro Mochizuki 2-6 2-6
Q2 W Naoki Nakagawa 6-3 6-3
Q1 W Philip Henning 7-6(3) 3-6 7-5
Taipei 2 CH, challenger Hard, October
Q1 L Reese Stalder 5-7 5-7
Nonthaburi 4 CH, challenger Hard, September
R32 L Gabriel Diallo 6-7(9) 0-6
Q2 W Andre Ilagan 6-4 6-4
Q1 W Thantub Suksumrarn 7-6(1) 6-3
Zhangjiagang CH, challenger Hard, August
Q1 L Ajeet Rai 4-6 0-6
Jinan CH, challenger Hard, August
R16 L Keegan Smith 6-7(6) 5-7
R32 W Dominik Palan 6-3 6-7(5) 6-3
Q2 W Maxim Zhukov 6-3 6-4
Q1 W Zekai Li 6-2 6-2
Tampere CH, challenger Clay, July
Q1 L Henri Laaksonen 6-7(2) 7-5 3-6
Trieste CH, challenger Clay, July
Q2 L Carlos Lopez Montagud 2-6 4-6
Q1 W Francesco Forti 2-6 6-2 6-2
Poznan CH, challenger Clay, June
Q2 L Hynek Barton 7-5 3-6 1-6
Q1 W Sebastian Fanselow 7-6(2) 6-2
Prostejov CH, challenger Clay, June
Q1 L Kamil Majchrzak 2-6 6-4 4-6
Taipei CH, challenger Hard, May
R16 L Adam Walton 0-6 3-6
R32 W Yun Seong Chung 6-4 7-6(0)
Q2 W Kaito Uesugi 4-6 6-0 6-2
Q1 W Shintaro Imai 2-6 6-3 6-3
Gwangju CH, challenger Hard, April
R16 L Alibek Kachmazov 4-6 3-6
R32 W Otto Virtanen 6-4 6-3
Busan CH, challenger Hard, April
R32 L Philip Sekulic 1-6 4-6

2023

Yokkaichi CH, challenger Hard, November
R32 L Kaichi Uchida 6-7(6) 6-2 1-6
Q2 W Calum Puttergill 4-6 6-1 6-0
Q1 W Fajing Sun 6-3 6-2
Sydney CH, challenger Hard, October
QF L Rinky Hijikata 7-6(5) 5-7 6-7(5)
R16 W Dane Sweeny 6-4 6-2
R32 W Tristan Schoolkate 7-6(9) 6-4
Q2 W Yusuke Takahashi 6-3 6-1
Q1 W Alexander Klintcharov 6-2 7-6(3)
Playford CH, challenger Hard, October
R32 L Rinky Hijikata 4-6 6-7(4)
Q2 W Thomas Fancutt 2-6 6-2 7-5
Q1 W Mac Kiger 5-7 6-2 6-0
Grodzisk Mazowiecki CH, challenger Hard, August
Q1 L Mats Rosenkranz 2-6 3-6
Meerbusch CH, challenger Clay, August
Q2 L Orlando Luz 6-4 4-6 4-6
Q1 W Aaron James Williams 6-4 6-7(4) 6-1
Porto CH, challenger Hard, July
Q1 L Jaime Faria 4-6 4-6
Pozoblanco CH, challenger Hard, July
Q1 L Fajing Sun 6-7(5) 1-6
Bloomfield Hills CH, challenger Hard, July
Q1 L Evan Zhu 1-6 4-6
Cali CH, challenger Clay, June
Q1 L Frazier Rengifo 4-6 2-6
Palmas Del Mar CH, challenger Hard, June
Q1 L Gustavo Heide 4-6 4-6
Busan CH, challenger Hard, May
R32 L Gabriel Diallo 3-6 3-6
Gwangju CH, challenger Hard, May
Q2 L Dominik Palan 4-6 3-6
Q1 W Ajeet Rai 5-7 6-1 6-2
Seoul CH, challenger Hard, April
R32 L Max Purcell 3-6 4-6
Q2 W Shinji Hazawa 6-2 6-4
Q1 W Hiroki Moriya 6-2 6-2
Madrid CH, challenger Clay, April
Q1 L Viktor Durasovic 6-4 6-7(3) 6-7(10)
Murcia CH, challenger Clay, April
Q2 L Edas Butvilas 6-2 3-6 1-6
Q1 W Daniel Rincon 6-3 6-2
Lille CH, challenger Hard, March
Q1 L Beibit Zhukayev 1-6 7-6(11) 3-6
Puerto Vallarta CH, challenger Hard, March
Q1 L Guido Andreozzi 3-6 1-6
Chennai CH, challenger Hard, February
Q2 L Sumit Nagal 1-6 3-6
Q1 W Giovanni Mpetshi Perricard 6-4 6-4

2022

Kobe CH, challenger Hard, November
Q1 L Renta Tokuda 4-6 1-6
Matsuyama CH, challenger Hard, November
Q2 L Jason Jung 3-6 4-6
Q1 W Jonathan Mridha 7-6(2) 6-3
Yokohama CH, challenger Hard, October
Q1 L Taisei Ichikawa 6-7(8) 5-7
Busan CH, challenger Hard, October
R16 L Christopher Oconnell 3-6 2-6
R32 W Kaichi Uchida 6-3 6-3
Gwangju CH, challenger Hard, October
QF L Emilio Gomez 1-6 6-1 1-6
R16 W Yibing Wu 6-4 6-2
R32 W Yunseong Chung 1-6 6-3 7-5
Q2 W Shinji Hazawa 6-1 7-6(3)
Seoul Hard, September
R32 L Steve Johnson 6-7(3) 4-6
Nonthaburi 1 CH, challenger Hard, August
Q1 L Valentin Vacherot 0-3 RET
Nur-Sultan CH, challenger Hard, July
R16 L Benjamin Lock 2-6 1-6
R32 W Timofey Skatov 7-6(4) 4-6 7-5
Q2 W Saba Purtseladze 3-6 7-5 6-0
Q1 W Alexander Zgirovsky 6-1 6-1

2021

Columbus CH, challenger Hard, September
R16 L Alex Bolt 6-7(5) 4-6
R32 W Yunseong Chung 3-6 6-4 7-6(3)
Great Ocean Road Open Hard, February
R64 L Dane Sweeny 6-7(4) 5-7
Delray Beach Hard, January
R32 L Tommy Paul 1-6 4-6

2020

Columbus CH, challenger Hard, February
R16 L Marc Polmans 3-6 5-7
R32 W Lloyd Glasspool 6-3 6-2
Drummondville CH, challenger Hard, February
R16 L Christopher Oconnell 1-6 6-4 4-6
R32 W Evan Song 6-2 6-1
Cleveland CH, challenger Hard, February
R32 L Raymond Sarmiento 3-6 2-6
Australian Open, qualifying Hard, January
Q1 L Frederico Ferreira Silva 6-2 4-6 4-6
Noumea CH, challenger Hard, January
R64 L Joao Menezes 6-4 1-6 3-6
Q1 W Tung Lin Wu 6-4 3-6 6-3

2019

Kobe CH, challenger Hard, November
QF L Yosuke Watanuki 4-6 2-2 RET
R16 W Yuki Mochizuki 6-3 1-6 6-1
R32 W Ben Patael 6-2 6-4
Shenzhen CH, challenger Hard, October
R64 L Zhe Li 2-6 1-6
Liuzhou CH, challenger Hard, October
R32 L Danilo Petrovic 3-6 4-6
R64 W Kaichi Uchida 6-3 7-6(4)
Ningbo CH, challenger Hard, October
R16 L Bradley Klahn 6-7(5) 6-7(3)
R32 W Andrew Harris 6-3 7-5
R64 W Shuichi Sekiguchi 6-1 6-1
Kaohsiung CH, challenger Hard, September
QF L Marc Polmans 6-3 1-6 4-6
R16 W Andrew Harris 6-2 6-2
R32 W Chang Lin Tsai 6-4 6-1
R64 W Cheng Yu Yu 4-6 6-2 3-1 RET
Jinan CH, challenger Hard, September
R64 L Ivan Nedelko 6-4 5-7 3-6
Baotou CH, challenger Clay, August
R16 L Yan Bai 3-6 6-4 5-7
R32 W Arjun Kadhe 6-3 6-3
Yokkaichi CH, challenger Hard, August
QF L Sho Shimabukuro 7-6(1) 3-6 2-6
R16 W Hiroki Moriya 6-2 5-7 7-6(1)
R32 W Jumpei Yamasaki 6-3 6-2
Chengdu CH, challenger Hard, July
QF L Hyeon Chung 6-7(2) 6-1 3-6
R16 W Dayne Kelly 7-6(1) 6-3
R32 W Mao Xin Gong 7-6(2) 6-1
Nur-Sultan CH, challenger Hard, July
R16 L Evgeny Donskoy 6-3 1-6 4-6
R32 W Teymuraz Gabashvili 1-6 6-4 6-2
Columbus CH, challenger Hard, June
F L Mikael Torpegaard 1-6 5-7
SF W Dudi Sela 6-3 5-3 RET
QF W Zhizhen Zhang 6-3 6-2
R16 W Alejandro Gonzalez 6-4 6-2
R64 W Cannon Kingsley 7-5 6-4
Little Rock CH, challenger Hard, June
R32 L Joao Menezes 7-5 1-6 2-6
R64 W Victor Estrella 6-3 2-1 RET
Gwangju CH, challenger Hard, May
R32 L Yuichi Sugita 2-6 2-6
R64 W Rio Noguchi 6-2 6-1
Busan CH, challenger Hard, May
R64 L Cem Ilkel 4-6 6-7(2)
Seoul CH, challenger Hard, April
R32 L Ramkumar Ramanathan 3-6 6-7(6)
R64 W Duck Hee Lee 7-5 6-1
Q1 W Ji Hoon Son 6-3 6-2
Da Nang CH, challenger Hard, January
R64 L N Sriram Balaji 6-7(1) 6-7(3)

2018

Kobe CH, challenger Hard, November
R32 L Nam Hoang Ly 7-6(4) 6-7(9) 2-6
Shenzhen CH, challenger Hard, October
Q2 L Yaraslav Shyla 6-7(6) 6-2 3-6
Q1 W Yuanfeng Li 6-4 6-1
Liuzhou CH, challenger Hard, October
Q1 L Yecong He 6-2 3-6 2-6
Gwangju CH, challenger Hard, August
F L Maverick Banes 3-6 6-4 4-6
SF W Alexander Bublik 7-6(7) 7-5
QF W Akira Santillan 6-2 6-3
R16 W Zihao Xia 6-2 6-3
R32 W Henri Laaksonen 6-1 6-1
Q3 W Sami Reinwein 6-2 6-4
Q2 W Vasko Mladenov 6-3 6-3
Seoul CH, challenger Hard, April
Q3 L Yosuke Watanuki 5-7 2-6
Q2 W Blake Ellis 6-3 6-3
Q1 W Daniel Yoo 6-2 6-2

2016

Seoul CH, challenger Hard, May
R32 L Alexander Kudryavtsev 4-6 4-6
Busan CH, challenger Hard, May
R16 L Daniel Evans 3-6 2-6
R32 W Sam Groth 6-7(3) 7-6(4) 7-5

2015

Gimcheon CH, challenger Hard, June
QF L Hiroyasu Ehara 5-7 3-6
R16 W Ramkumar Ramanathan 3-6 6-2 6-3
R32 W Ruan Roelofse 6-2 6-4
Seoul CH, challenger Hard, May
R32 L Ze Zhang 4-6 6-2 4-6
Busan CH, challenger Hard, May
QF L Grega Zemlja 3-6 3-6
R16 W Daniel Nguyen 6-4 3-6 6-3
R32 W Takuto Niki 6-1 6-4

2014

Toyota CH, challenger Carpet, November
R16 L Yuichi Sugita 2-6 6-2 5-7
R32 W Toshihide Matsui 7-5 6-7(1) 6-1
Yokohama CH, challenger Hard, November
R32 L Yuuya Kibi 6-7(4) 5-7
Kaohsiung CH, challenger Hard, July
R32 L Yuichi Sugita 4-6 2-6
Nanchang CH, challenger Hard, June
R32 L Hyeon Chung 4-6 6-1 3-6
Tianjin CH, challenger Hard, June
R32 L Robin Kern 3-6 6-3 5-7
Busan CH, challenger Hard, May
QF L Go Soeda 4-6 4-6
R16 W Luke Saville 5-7 7-5 6-2
R32 W Tatsuma Ito 7-6(4) 2-1 RET

2013

Yeongwol CH, challenger Hard, November
R32 L Matt Reid 2-6 4-6
Seoul CH, challenger Hard, October
R32 L Yuichi Sugita 2-6 1-6
Kuala Lumpur, qualifying Hard, September
Q2 L Rajeev Ram 3-6 6-7(5)
Q1 W Santiago Gonzalez 6-4 6-2
Kaohsiung CH, challenger Hard, September
R32 L Nicolas Barrientos 4-6 3-6
Shanghai CH, challenger Hard, September
R32 L Tsung Hua Yang 3-6 4-6
Bangkok CH, challenger Hard, August
R32 L Matthew Ebden 3-6 5-7
Busan CH, challenger Hard, May
R32 L Tsung Hua Yang 6-2 3-6 2-6
An-Ning CH, challenger Clay, April
R32 L Ze Zhang 3-6 4-6

2012

Seoul CH, challenger Hard, October
QF L Jimmy Wang 3-6 2-6
R16 W Yuki Bhambri 1-0 RET
R32 W Alexander Kudryavtsev 6-3 6-2
Busan CH, challenger Hard, May
R32 L Yuki Bhambri 3-6 3-6

2011

Seoul CH, challenger Hard, October
R32 L Min Kyu Song 2-6 2-6
Busan CH, challenger Hard, May
R32 L Ludovic Walter 1-6 1-6

2010

Seoul CH, challenger Hard, October
R32 L Kevin Anderson 1-6 1-6
Busan CH, challenger Hard, May
R32 L Vishnu Vardhan 3-6 2-6