| Nanchang – Singles | |
|---|---|
| 2018 ATP Challenger China International – Nanchang | |
| Champion |  Quentin Halys |
| Runner-up | Calvin Hemery |
| Score | 6–3, 6–2 |
Hiroki Moriya was the defending champion but chose not to defend his title.
Quentin Halys won the title after defeating Calvin Hemery 6–3, 6–2 in the final.
Evgeny Donskoy (quarterfinals)
Jordan Thompson (semifinals) Quentin Halys (champion)
Ramkumar Ramanathan (quarterfinals) Calvin Hemery (final)
Go Soeda (first round) Tatsuma Ito (first round) Alex Bolt (second round)| Semifinals | Final | ||||||||||||
| 5 | Calvin Hemery | 6 | 6 | ||||||||||
 Aleksandr Nedovyesov | 3 | 4 | |||||||||||
| 5 | Calvin Hemery | 3 | 2 | ||||||||||
| 3 | Quentin Halys | 6 | 6 | ||||||||||
| 3 | Quentin Halys | 6 | 6 | ||||||||||
| 2 | Jordan Thompson | 1 | 3 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | E Donskoy | 6 | 6 | ||||||||||||||||||||||||
| WC |  Y He | 2 | 2 | 1 | E Donskoy | 62 | 6 | 77 | |||||||||||||||||||
 T-h Yang | 0 | 77 | 6 | T-h Yang | 77 | 3 | 63 | ||||||||||||||||||||
 L Grigelis | 6 | 65 | 3 | 1 | E Donskoy | 3 | 3 | ||||||||||||||||||||
| WC | Xia Zihao | 4 | 2 | 5 | C Hemery | 6 | 6 | ||||||||||||||||||||
| Q | A Escoffier | 6 | 6 | Q | A Escoffier | 4 | 1 | ||||||||||||||||||||
| A Whittington | 5 | 3 | 5 | C Hemery | 6 | 6 | |||||||||||||||||||||
| 5 | C Hemery | 7 | 6 | 5 | C Hemery | 6 | 6 | ||||||||||||||||||||
| 4 | R Ramanathan | 4 | 6 | 6 | A Nedovyesov | 3 | 4 | ||||||||||||||||||||
| WC | Y Wu | 6 | 2 | 3 | 4 | R Ramanathan | 7 | 6 | |||||||||||||||||||
 V Šafránek | 78 | 6 | V Šafránek | 5 | 1 | ||||||||||||||||||||||
| D Wu | 66 | 2 | 4 | R Ramanathan | 2 | 5 | |||||||||||||||||||||
 L Harris | 4 | 2 | A Nedovyesov | 6 | 7 | ||||||||||||||||||||||
| A Nedovyesov | 6 | 6 | A Nedovyesov | 6 | 6 | ||||||||||||||||||||||
| Q |  Y-s Chung | 6 | 77 | Q | Y-s Chung | 4 | 2 | ||||||||||||||||||||
| 7 | T Ito | 4 | 61 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | A Bolt | 6 | 6 | ||||||||||||||||||||||||
| S-w Kwon | 2 | 3 | 8 | A Bolt | 65 | 1 | |||||||||||||||||||||
 C İlkel | 4 | 4 | P Gunneswaran | 77 | 6 | ||||||||||||||||||||||
| P Gunneswaran | 6 | 6 | P Gunneswaran | 4 | 3 | ||||||||||||||||||||||
| WC | X Gao | 6 | 0 | 3 | Q Halys | 6 | 6 | ||||||||||||||||||||
| Z Li | 3 | 0r | WC | X Gao | 2 | 1 | |||||||||||||||||||||
 M Safwat | 65 | 4 | 3 | Q Halys | 6 | 6 | |||||||||||||||||||||
| 3 | Q Halys | 77 | 6 | 3 | Q Halys | 6 | 6 | ||||||||||||||||||||
| 6 | G Soeda | 4 | 64 | 2 | J Thompson | 1 | 3 | ||||||||||||||||||||
 R Ortega Olmedo | 6 | 77 | R Ortega Olmedo | 6 | 6 | ||||||||||||||||||||||
| LL | S Mukund | 6 | 6 | LL | S Mukund | 4 | 2 | ||||||||||||||||||||
| Ze Zhang | 4 | 4 | R Ortega Olmedo | 6 | 2 | 2 | |||||||||||||||||||||
 K Majchrzak | 5 | 2 | 2 | J Thompson | 4 | 6 | 6 | ||||||||||||||||||||
| Q | H Grenier | 7 | 6 | Q | H Grenier | 1 | 4 | ||||||||||||||||||||
| D-h Lee | 2 | 1 | 2 | J Thompson | 6 | 6 | |||||||||||||||||||||
| 2 | J Thompson | 6 | 6 | ||||||||||||||||||||||||
Pablo Andújar was the defending champion, but lost to Thomaz Bellucci in the quarterfinals.
David Goffin was the defending champion, but decided not to participate this year.
Víctor Estrella Burgos was the defending champion and successfully defended his title, defeating Thomaz Bellucci in the final, 4–6, 7–6(7–5), 6–2.
Benoît Paire was the defending champion, but chose to compete in Hamburg instead.
Jordan Thompson was the defending champion but lost in the quarterfinals to Quentin Halys.
Carlos Berlocq was the defending champion but chose not to defend his title.
Kimmer Coppejans was the defending champion but lost in the first round to Tallon Griekspoor.
Ivo Karlović was the defending champion, but lost in the first round to Quentin Halys.
James Duckworth was the defending champion but chose not to defend his title.
Jo-Wilfried Tsonga was the defending champion, but withdrew before the tournament began.
Malek Jaziri was the defending champion but chose not to defend his title.
Wu Di and Zhang Zhizhen were the defending champions but only Wu chose to defend his title, partnering Wu Yibing. Wu lost in the quarterfinals to Quentin Halys and Calvin Hemery.
Janko Tipsarević was the defending champion but chose not to defend his title.
Frances Tiafoe was the defending champion but chose not to defend his title.
Damir Džumhur was the defending champion but chose not to defend his title.
David Ferrer was the defending champion, but lost in the second round to Casper Ruud.
Calvin Hemery was the defending champion but chose not to defend his title.
Leonardo Mayer was the defending champion, but lost in the final to Nikoloz Basilashvili, 4–6, 6–0, 5–7. This was Basilashvili's first ATP World Tour title, as well as the first ATP title won by a Georgian player since Alexander Metreveli.
Guido Andreozzi was the defending champion but chose not to defend his title.
Quentin Halys was the defending champion but chose not to defend his title.