| Singles | |
|---|---|
| 2018 OEC Kaohsiung | |
| Champion |  Gaël Monfils |
| Runner-up |  Kwon Soon-woo |
| Final score | 6–4, 2–6, 6–1 |
Evgeny Donskoy was the defending champion but chose not to defend his title.
Gaël Monfils won the title after defeating Kwon Soon-woo 6–4, 2–6, 6–1 in the final.
Gaël Monfils (champion)
Malek Jaziri (semifinals)
Jason Kubler (first round)
Jason Jung (second round)
Lloyd Harris (second round)
Ramkumar Ramanathan (second round)
Ernests Gulbis (quarterfinals) Prajnesh Gunneswaran (first round)| Semifinals | Final | ||||||||||||
| 1/WC | Gaël Monfils | 6 | 6 | ||||||||||
| Lee Duck-hee | 1 | 1 | |||||||||||
| 1/WC | Gaël Monfils | 6 | 2 | 6 | |||||||||
| Q | Kwon Soon-woo | 4 | 6 | 1 | |||||||||
| Q | Kwon Soon-woo | 6 | 6 | ||||||||||
| 2 | Malek Jaziri | 3 | 4 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1/WC | G Monfils | 5 | 6 | 6 | |||||||||||||||||||||||
| Q | A Santillan | 7 | 3 | 4 | 1/WC | G Monfils | 6 | 6 | |||||||||||||||||||
 G Soeda | 77 | 77 | G Soeda | 2 | 3 | ||||||||||||||||||||||
| LL | Y Sugita | 64 | 64 | 1/WC | G Monfils | 77 | 6 | ||||||||||||||||||||
| Y Uchiyama | 7 | 6 | 7/WC | E Gulbis | 64 | 2 | |||||||||||||||||||||
| SE |  B Kavčič | 5 | 2 | Y Uchiyama | 2 | 4 | |||||||||||||||||||||
 A Bublik | 1r | 7/WC | E Gulbis | 6 | 6 | ||||||||||||||||||||||
| 7/WC | E Gulbis | 3 | 1/WC | G Monfils | 6 | 6 | |||||||||||||||||||||
| 4 | J Jung | 6 | 6 | D-h Lee | 1 | 1 | |||||||||||||||||||||
| Q | Y-s Chung | 3 | 4 | 4 | J Jung | 65 | 4 | ||||||||||||||||||||
 T Brkić | 2 | 65 | D-h Lee | 77 | 6 | ||||||||||||||||||||||
| D-h Lee | 6 | 77 | D-h Lee | 6 | 7 | ||||||||||||||||||||||
| Y Nishioka | 3 | 0 | Q |  F Ferreira Silva | 2 | 5 | |||||||||||||||||||||
| Q | F Ferreira Silva | 6 | 6 | Q | F Ferreira Silva | 3 | 6 | 77 | |||||||||||||||||||
 M Neuchrist | 4 | 2 | 6 | R Ramanathan | 6 | 4 | 64 | ||||||||||||||||||||
| 6 | R Ramanathan | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | L Harris | 65 | 6 | 6 | |||||||||||||||||||||||
 J Ward | 77 | 3 | 2 | 5 | L Harris | 3 | 5 | ||||||||||||||||||||
| WC | T-l Wu | 3 | 2 | Q | S-w Kwon | 6 | 7 | ||||||||||||||||||||
| Q | S-w Kwon | 6 | 6 | Q | S-w Kwon | 6 | 6 | ||||||||||||||||||||
| H Moriya | 4 | 3 |  B Schnur | 3 | 4 | ||||||||||||||||||||||
| T-h Yang | 6 | 6 | T-h Yang | 5 | 3 | ||||||||||||||||||||||
| B Schnur | 6 | 77 | B Schnur | 7 | 6 | ||||||||||||||||||||||
| 3 | J Kubler | 4 | 64 | Q | S-w Kwon | 6 | 6 | ||||||||||||||||||||
| 8 | P Gunneswaran | 3 | 7 | 3 | 2 | M Jaziri | 3 | 4 | |||||||||||||||||||
| J Rodionov | 6 | 5 | 6 | J Rodionov | 6 | 1 | 6 | ||||||||||||||||||||
| M Purcell | 77 | 5 | 3 | WC | C-h Tseng | 4 | 6 | 3 | |||||||||||||||||||
| WC | C-h Tseng | 64 | 7 | 6 | J Rodionov | 4 | 78 | 4 | |||||||||||||||||||
| F Peliwo | 3 | 0 | 2 | M Jaziri | 6 | 66 | 6 | ||||||||||||||||||||
 F Gaio | 6 | 6 | F Gaio | 3 | 64 | ||||||||||||||||||||||
| SE |  Z Li | 2 | 2 | 2 | M Jaziri | 6 | 77 | ||||||||||||||||||||
| 2 | M Jaziri | 6 | 6 | ||||||||||||||||||||||||
Dmitry Tursunov was the defending champion, but chose not to participate that year.
Gaël Monfils won in the final 7–6(7–1), 3–6, 6–2 against Philipp Kohlschreiber.
Novak Djokovic defeated Gaël Monfils in the final, 6–2, 5–7, 7–6(7–3), to win the singles title at the 2009 Paris Masters. It was his first Paris Masters title, and the first of an eventual record six titles at the event.
Gaël Monfils was the defending champion, but he withdrew before his match against German qualifier Mischa Zverev.
Gilles Simon won the title, by defeating Zverev in the final, 6–3, 6–2.
Robin Söderling defeated Gaël Monfils in the final, 6–1, 7–6(7–1), to win the singles title at the 2010 Paris Masters.
Roger Federer was the defending champion, but decided not to participate.
Roger Federer was the defending champion, but was forced to withdraw from the tournament before the semifinals because of a back injury. Following Federer's withdrawal, Stefan Edberg and Jo-Wilfried Tsonga played a one set exhibition match to make up the evening session.
Ernests Gulbis was the defending champion, but lost to Jérémy Chardy in the second round.
Stan Wawrinka was the defending champion, but chose not to participate this year.
Gaël Monfils was the defending champion, but lost in the second round to Yuki Bhambri.
Florin Mergea was the defending champion, but did not complete in the Juniors this year.
Denis Istomin was the defending champion, but chose not to participate this year.
Jo-Wilfried Tsonga was the defending champion, but lost in the second round to Gaël Monfils.
The 2019 OEC Kaohsiung-Singles was a men's tennis tournament held from September 16 to September 22, 2019 at Kaohsiung, Taiwan. Gaël Monfils was the defending champion but chose not to defend his title.
Jo-Wilfried Tsonga was the defending champion, but chose not to participate this year.
Gaël Monfils was the defending champion and successfully defended his title, defeating Félix Auger-Aliassime in the final, 6–2, 6–4.
Roger Federer was the defending champion, but withdrew from the tournament after undergoing surgery on his right knee.
Dominic Thiem was the defending champion, but lost to Andrey Rublev in the quarterfinals.
Gaël Monfils was the defending champion, but chose not to defend his title.
Andrey Rublev defeated Márton Fucsovics in the final, 7–6(7–4), 6–4 to capture the men's singles tennis title at the 2021 Rotterdam Open. It was Rublev's fourth consecutive ATP Tour 500 victory, dating back to the 2020 Hamburg Open.
Jannik Sinner was the defending champion and successfully defended his title, defeating Gaël Monfils in the final, 6–3, 6–4.