| Singles | |
|---|---|
| 2017 OEC Kaohsiung | |
| Champion |  Evgeny Donskoy |
| Runner-up |  Marius Copil |
| Final score | 7–6(7–0), 7–5 |
Chung Hyeon was the defending champion but chose not to defend his title.
Evgeny Donskoy won the title after defeating Marius Copil 7–6(7–0), 7–5 in the final.
Jordan Thompson (first round)
Dudi Sela (first round) Marius Copil (final) Evgeny Donskoy (champion)
Lukáš Lacko (quarterfinals) Mikhail Youzhny (first round)
Yuki Bhambri (first round) Akira Santillan (second round)| Semifinals | Final | ||||||||||||
| LL | Marinko Matosevic | 2 | 65 | ||||||||||
| 3 | Marius Copil | 6 | 77 | ||||||||||
| 3 | Marius Copil | 60 | 5 | ||||||||||
| 4 | Evgeny Donskoy | 77 | 7 | ||||||||||
| 4 | Evgeny Donskoy | 6 | 6 | ||||||||||
 Lloyd Harris | 3 | 3 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | J Thompson | 63 | 3 | ||||||||||||||||||||||||
| Q |  A Begemann | 77 | 6 | Q | A Begemann | 3 | 6 | 6 | |||||||||||||||||||
| WC |  T-h Yang | 6 | 6 | WC | T-h Yang | 6 | 1 | 4 | |||||||||||||||||||
| WC |  Y-s Chung | 3 | 2 | Q | A Begemann | 1 | 3 | ||||||||||||||||||||
| WC | Y-h Hsu | 1 | 2 | LL | M Matosevic | 6 | 6 | ||||||||||||||||||||
| LL | M Matosevic | 6 | 6 | LL | M Matosevic | 68 | 77 | 6 | |||||||||||||||||||
| L Saville | 1 | 77 | 6 | L Saville | 710 | 62 | 1 | ||||||||||||||||||||
| 6 | M Youzhny | 6 | 62 | 1 | LL | M Matosevic | 2 | 65 | |||||||||||||||||||
| 3 | M Copil | 6 | 6 | 3 | M Copil | 6 | 77 | ||||||||||||||||||||
| S Nagal | 4 | 2 | 3 | M Copil | 6 | 3 | 6 | ||||||||||||||||||||
| T Gabashvili | 0 | 65 | M Bachinger | 4 | 6 | 3 | |||||||||||||||||||||
| M Bachinger | 6 | 77 | 3 | M Copil | 78 | 6 | |||||||||||||||||||||
 M Chiudinelli | 0 | 63 |  L Rosol | 66 | 4 | ||||||||||||||||||||||
| L Rosol | 6 | 77 | L Rosol | 6 | 65 | 7 | |||||||||||||||||||||
 Shuichi Sekiguchi | 3 | 4 | 8 | A Santillan | 4 | 77 | 5 | ||||||||||||||||||||
| 8 | A Santillan | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | L Lacko | 6 | 6 | ||||||||||||||||||||||||
| S-w Kwon | 3 | 4 | 5 | L Lacko | 7 | 6 | |||||||||||||||||||||
| Q | Kim Cheong-eui | 4 | 4 | Q |  Y Bai | 5 | 2 | ||||||||||||||||||||
| Q | Y Bai | 6 | 6 | 5 | L Lacko | 2 | 4 | ||||||||||||||||||||
| J Jung | 3 | 6 | 77 | 4 | E Donskoy | 6 | 6 | ||||||||||||||||||||
| D-h Lee | 6 | 2 | 61 | J Jung | 1 | 64 | |||||||||||||||||||||
| Q | Yuya Kibi | 2 | 4 | 4 | E Donskoy | 6 | 77 | ||||||||||||||||||||
| 4 | E Donskoy | 6 | 6 | 4 | E Donskoy | 6 | 6 | ||||||||||||||||||||
| 7 | Y Bhambri | 3 | 3 | L Harris | 3 | 3 | |||||||||||||||||||||
| J Millman | 6 | 6 | J Millman | 6 | 3 | 6 | |||||||||||||||||||||
| H Moriya | 6 | 6 | H Moriya | 1 | 6 | 3 | |||||||||||||||||||||
| M Polmans | 2 | 4 | J Millman | 64 | 3 | ||||||||||||||||||||||
| WC | T-l Wu | 4 | 64 | L Harris | 77 | 6 | |||||||||||||||||||||
| L Harris | 6 | 77 | L Harris | 63 | 77 | 77 | |||||||||||||||||||||
| M Purcell | 6 | 0 | 6 | M Purcell | 77 | 65 | 64 | ||||||||||||||||||||
| 2 | D Sela | 4 | 6 | 3 | |||||||||||||||||||||||
Marius Copil was the defending champion but lost the final to Jürgen Zopp, 7–6(7–4), 7–6(7–4).
David Ferrer was the defending champion, but withdrew before the beginning of the tournament because of an ankle injury.
Carlos Berlocq won the title, defeating Fernando Verdasco in the final, 7–5, 6–1.
Evgeny Donskoy was the defending champion, but chose to participate at the 2013 Odlum Brown Vancouver Open instead.
Tomáš Berdych was the defending champion, but chose not to compete.
Grigor Dimitrov won the title, defeating David Ferrer in the final, 2–6, 6–3, 6–4.
Marius Copil was the defending champion, but lost in the quarterfinal to Pierre-Hugues Herbert.
James Ward was the defending champion, but lost the re-match of the 2013 final to James Duckworth with the Australian winning the title this year, 6–3, 6–4.
Stan Wawrinka was the defending champion, but chose not to participate this year.
Thomaz Bellucci was the defending champion, but lost in the second round to Federico Delbonis.
Marius Copil was the defending champion but lost in the quarterfinals to Jürgen Melzer.
Stan Wawrinka was the defending champion, but lost in the first round to Damir Džumhur.
Martin Kližan was the defending champion, but lost in the quarterfinals to Tomáš Berdych.
Federico Delbonis was the defending champion but retired in the first round against Reda El Amrani.
This was the first edition of the tournament.
Malek Jaziri was the defending champion and successfully defended his title.
Grigor Dimitrov was the defending champion, but withdrew before the tournament because of a shoulder injury.
Alexander Zverev was the defending champion and successfully defended his title, defeating Philipp Kohlschreiber in the final, 6–3, 6–3.
Alexander Zverev defeated Dominic Thiem in the final, 6–4, 6–4, to win the men's singles title at the 2018 Madrid Open.
Rafael Nadal defeated Stefanos Tsitsipas in the final, 6–2, 7–6(7–4), to win his fourth Rogers Cup title.
Roger Federer was the defending champion and successfully defended his title, defeating Marius Copil in the final, 7–6(7–5), 6–4.
Aljaž Bedene was the defending champion but lost in the quarterfinals to Mikael Ymer.