| Singles | |
|---|---|
| 2018 Canberra Challenger | |
| Champion |  Andreas Seppi |
| Runner-up |  Márton Fucsovics |
| Score | 5–7, 6–4, 6–3 |
Dudi Sela was the defending champion but lost in the first round to Hugo Grenier.
Andreas Seppi won the title after defeating Márton Fucsovics 5–7, 6–4, 6–3 in the final.
Dudi Sela (first round)
Florian Mayer (quarterfinals)
Guillermo García López (quarterfinals)
Mikhail Kukushkin (first round, retired)
Víctor Estrella Burgos (semifinals) Márton Fucsovics (final) Andreas Seppi (champion)
Laslo Đere (first round)| Semifinals | Final | ||||||||||||
| 6 | Márton Fucsovics | 6 | 4 | 6 | |||||||||
 Maxime Janvier | 3 | 6 | 2 | ||||||||||
| 6 | Márton Fucsovics | 7 | 4 | 3 | |||||||||
| 7 | Andreas Seppi | 5 | 6 | 6 | |||||||||
| 7 | Andreas Seppi | 6 | 6 | ||||||||||
| 5 | Víctor Estrella Burgos | 2 | 2 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | D Sela | 66 | 1 | ||||||||||||||||||||||||
| H Grenier | 78 | 6 | H Grenier | 7 | 3 | 77 | |||||||||||||||||||||
 A Harris | 6 | 6 | A Harris | 5 | 6 | 63 | |||||||||||||||||||||
| WC | Gavin van Peperzeel | 2 | 1 | H Grenier | 4 | 4 | |||||||||||||||||||||
| Q | H Bourchier | 2 | 4 | 6 | M Fucsovics | 6 | 6 | ||||||||||||||||||||
 Z Li | 6 | 6 | Z Li | 1 | 2 | ||||||||||||||||||||||
 M Jaziri | 2 | 1r | 6 | M Fucsovics | 6 | 6 | |||||||||||||||||||||
| 6 | M Fucsovics | 6 | 5 | 6 | M Fucsovics | 6 | 4 | 6 | |||||||||||||||||||
| 4 | M Kukushkin | 62 | 0r | M Janvier | 3 | 6 | 2 | ||||||||||||||||||||
| Q | J Beale | 77 | 0 | Q | J Beale | 7 | 3 | 4 | |||||||||||||||||||
 N Kicker | 4 | 5 | E Benchetrit | 5 | 6 | 6 | |||||||||||||||||||||
| E Benchetrit | 6 | 7 | E Benchetrit | 4 | 2 | ||||||||||||||||||||||
 N Jarry | 77 | 6 | M Janvier | 6 | 6 | ||||||||||||||||||||||
| C Moutet | 64 | 3 | N Jarry | 2 | 6 | 65 | |||||||||||||||||||||
| M Janvier | 3 | 7 | 6 | M Janvier | 6 | 2 | 77 | ||||||||||||||||||||
| 8 | L Đere | 6 | 5 | 2 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | A Seppi | 3 | 6 | 79 | |||||||||||||||||||||||
| M Marterer | 6 | 3 | 67 | 7 | A Seppi | 6 | 6 | ||||||||||||||||||||
| Q |  N Pasha | 6 | 2 | 77 | Q | N Pasha | 2 | 4 | |||||||||||||||||||
| Q | T Fancutt | 4 | 6 | 62 | 7 | A Seppi | 6 | 6 | |||||||||||||||||||
| WC | Alexander Crnokrak | 1 | 2 | 3 | G García López | 3 | 4 | ||||||||||||||||||||
| G Blancaneaux | 6 | 6 | G Blancaneaux | 5 | 4 | ||||||||||||||||||||||
| S Bangoura | 3 | 4 | 3 | G García López | 7 | 6 | |||||||||||||||||||||
| 3 | G García López | 6 | 6 | 7 | A Seppi | 6 | 6 | ||||||||||||||||||||
| 5 | V Estrella Burgos | 6 | 6 | 5 | V Estrella Burgos | 2 | 2 | ||||||||||||||||||||
| L Saville | 3 | 3 | 5 | V Estrella Burgos | w/o | ||||||||||||||||||||||
| T Pütz | 5 | 77 | 6 | T Pütz | |||||||||||||||||||||||
 S-w Kwon | 7 | 61 | 4 | 5 | V Estrella Burgos | 77 | 0 | 6 | |||||||||||||||||||
| WC | D Propoggia | 6 | 3 | 1 | 2 | F Mayer | 64 | 6 | 3 | ||||||||||||||||||
| WC | B Mitchell | 3 | 6 | 6 | WC | B Mitchell | 4 | 66 | |||||||||||||||||||
 Yo Watanuki | 7 | 1 | 4 | 2 | F Mayer | 6 | 78 | ||||||||||||||||||||
| 2 | F Mayer | 5 | 6 | 6 | |||||||||||||||||||||||
Andy Murray was the defending champion, but lost in the third round to Mardy Fish.
Sam Querrey won in the final 7–6(7–3), 7–5 against Fish.
Janko Tipsarević was the defending champion, but decided to participate at 2012 Erste Bank Open instead.
Andreas Seppi won the final over Brazilian Thomaz Bellucci with the score 3–6, 7–6(7–3), 6–3.
Andy Murray defeated David Ferrer in the final, 2–6, 6–4, 7–6(7–1) to win the men's singles tennis title at the 2013 Miami Open. It was his second Miami Open title.
Dudi Sela was the defending champion but chose to participate at the 2013 US Open instead.
Top seed Blaž Kavčič won the title over surprise finalist Jeong Suk-Young 6–3, 6–1.
Jo-Wilfried Tsonga was the two-time defending champion but lost in the final to Gilles Simon, 4–6, 3–6.
Benjamin Becker is the defending champion, but lost in the quarterfinals to fifth seeded Teymuraz Gabashvili.
Top seed Andreas Seppi defeated surprise finalist Simon Greul.
Márton Fucsovics was the defending champion, but he did not participate that year.
Ivo Karlović was the defending champion from when the tournament was last held in 2008, but chose not to participate.
Jerzy Janowicz was the defending champion but chose not to defend his title.
Stefano Napolitano was the defending champion but lost in the second round to Matteo Donati.
Norbert Gombos was the defending champion but lost in the first round to Jerzy Janowicz.
Luca Vanni was the defending champion but chose not to defend his title.
Lucas Pouille was the defending champion, but lost in the second round to John Millman.
Stan Wawrinka was the two-time defending champion but lost to Márton Fucsovics in the quarterfinals.
Mirza Bašić was the defending champion but lost in the first round to Martin Kližan.
Alexander Zverev defeated Nicolás Jarry in the final, 6–3, 3–6, 7–6(10–8) to win the singles tennis title at the 2019 Geneva Open. Zverev saved two championship points en route to the title, in the final-set tiebreak.
Nikoloz Basilashvili was the defending champion, but lost in the second round to Stefanos Tsitsipas.
Reilly Opelka was the defending champion, but lost to Jason Jung in the quarterfinals.
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.
Matteo Berrettini defeated Aslan Karatsev in the final, 6–1, 3–6, 7–6(7–0) to win the men's singles tennis title at the 2021 Serbia Open.