| Singles | |
|---|---|
| 2021 Poznań Open | |
| Champion |  Bernabé Zapata Miralles |
| Runner-up |  Jiří Lehečka |
| Score | 6–3, 6–2 |
Tommy Robredo was the defending champion [1] but chose not to defend his title.
Bernabé Zapata Miralles won the title after defeating Jiří Lehečka 6–3, 6–2 in the final.
Bernabé Zapata Miralles (champion)
Botic van de Zandschulp (quarterfinals)
Henri Laaksonen (withdrew)
Hugo Gaston (withdrew) Zdeněk Kolář (quarterfinals) Enzo Couacaud (first round)
Dmitry Popko (semifinals)
Guido Andreozzi (first round)| Semifinals | Final | ||||||||||||
| 1 | Bernabé Zapata Miralles | 1 | 7 | 7 | |||||||||
| 7 | Dmitry Popko | 6 | 5 | 5 | |||||||||
| 1 | Bernabé Zapata Miralles | 6 | 6 | ||||||||||
| Jiří Lehečka | 3 | 2 | |||||||||||
| Q |  A Shevchenko | 4 | 2 | ||||||||||
| Jiří Lehečka | 6 | 6 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | B Zapata Miralles | 6 | 6 | ||||||||||||||||||||||||
 K Coppejans | 1 | 1 | 1 | B Zapata Miralles | 4 | 7 | 6 | ||||||||||||||||||||
 M Moraing | 6 | 6 | M Moraing | 6 | 5 | 3 | |||||||||||||||||||||
| T Kamke | 4 | 2 | 1 | B Zapata Miralles | 6 | 710 | |||||||||||||||||||||
| F Mena | 6 | 0 | 6 | A Müller | 2 | 68 | |||||||||||||||||||||
| J de Jong | 3 | 6 | 4 | F Mena | 3 | 2 | |||||||||||||||||||||
| A Müller | 6 | 6 | A Müller | 6 | 6 | ||||||||||||||||||||||
| 6 | E Couacaud | 3 | 2 | 1 | B Zapata Miralles | 1 | 7 | 7 | |||||||||||||||||||
| LL | E Furness | 2 | 5 | 7 | D Popko | 6 | 5 | 5 | |||||||||||||||||||
| SE | N Kicker | 6 | 7 | SE | N Kicker | 6 | 6 | ||||||||||||||||||||
| WC |  Aleksander Orlikowski | 3 | 5 | M Guinard | 2 | 4 | |||||||||||||||||||||
| M Guinard | 6 | 7 | SE | N Kicker | 6 | 4 | 2 | ||||||||||||||||||||
| M Janvier | 3 | 2 | 7 | D Popko | 3 | 6 | 6 | ||||||||||||||||||||
 R Marcora | 6 | 6 | R Marcora | 0 | 3 | ||||||||||||||||||||||
| V Kopřiva | 4 | 6 | 5 | 7 | D Popko | 6 | 6 | ||||||||||||||||||||
| 7 | D Popko | 6 | 4 | 7 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 5 | Z Kolář | 6 | 6 | ||||||||||||||||||||||||
| Alt | J Forejtek | 4 | 4 | 5 | Z Kolář | 6 | 4 | 7 | |||||||||||||||||||
| Alt | P Cachin | 6 | 6 | Alt | P Cachin | 4 | 6 | 5 | |||||||||||||||||||
| Q |  J Domingues | 3 | 1 | 5 | Z Kolář | 4 | 1 | ||||||||||||||||||||
| Q | Elmar Ejupovic | 6 | 6 | Q | A Shevchenko | 6 | 6 | ||||||||||||||||||||
| Q | David Poljak | 2 | 4 | Q | E Ejupovic | 63 | 6 | 63 | |||||||||||||||||||
| WC |  Leo Borg | 5 | 2 | Q | A Shevchenko | 77 | 3 | 77 | |||||||||||||||||||
| Q | A Shevchenko | 7 | 6 | Q | A Shevchenko | 4 | 2 | ||||||||||||||||||||
| 8 | G Andreozzi | 1 | 4 | J Lehečka | 6 | 6 | |||||||||||||||||||||
 A Vukic | 6 | 6 | A Vukic | 3 | 4 | ||||||||||||||||||||||
| J Lehečka | 6 | 7 | J Lehečka | 6 | 6 | ||||||||||||||||||||||
| T Lamasine | 3 | 5 | J Lehečka | 7 | 6 | ||||||||||||||||||||||
| LL |  M Zekić | 6 | 7 | 2 | B van de Zandschulp | 5 | 3 | ||||||||||||||||||||
| G Elias | 2 | 5 | LL | M Zekić | 4 | 1 | |||||||||||||||||||||
| WC | D Michalski | 2 | 3 | 2 | B van de Zandschulp | 6 | 6 | ||||||||||||||||||||
| 2 | B van de Zandschulp | 6 | 6 | ||||||||||||||||||||||||
Stan Wawrinka was the two-time defending champion but lost to Márton Fucsovics in the quarterfinals.
Scott Griekspoor was the defending champion but lost in the second round to Tristan Lamasine.
Kimmer Coppejans was the defending champion but lost in the quarterfinals to Alejandro Davidovich Fokina.
Salvatore Caruso was the defending champion and chose not to defend his title.
This event was the second edition of the Open Quimper Bretagne in 2021 after the Open d'Orléans was delayed due to the COVID-19 pandemic in France.
Gaël Monfils was the defending champion, but chose not to defend his title.
Aslan Karatsev won his first ATP Tour singles title, defeating Lloyd Harris in the final, 6–3, 6–2 to win the men's singles tennis title at the 2021 Dubai Tennis Championships. Karatsev became the second wildcard in the tournament's history to win the men's singles title. Harris was the first qualifier to reach the final of the Dubai Tennis Championships.
Bernabé Zapata Miralles was the defending champion but chose not to defend his title.
Jo-Wilfried Tsonga was the reigning champion from when the tournament was last held in 2019, but chose not to participate this year.
Félix Auger-Aliassime defeated Stefanos Tsitsipas in the final, 6–4, 6–2. It was his maiden ATP Tour singles title, following eight runner-up finishes in prior finals.
Carlos Taberner was the defending champion but lost in the quarterfinals to Tseng Chun-hsin.
Defending champion Stefanos Tsitsipas defeated Alejandro Davidovich Fokina in the final, 6–3, 7–6(7–3) to win the singles tennis title at the 2022 Monte-Carlo Masters. He became the sixth player to win consecutive titles at the Monte-Carlo Masters in the Open Era. The win also earned him his second Masters 1000 title and his eighth career singles title overall.
David Goffin defeated Alex Molčan in the final, 3–6, 6–3, 6–3 to win the singles tennis title at the 2022 Grand Prix Hassan II. It was Goffin's sixth ATP singles title.
Carlos Alcaraz defeated Pablo Carreño Busta in the final, 6–3, 6–2 to win the singles tennis title at the 2022 Barcelona Open. Alcaraz saved two match points en route to the title, in the semifinals against Alex de Minaur. With the win, Alcaraz entered the top 10 in rankings for the first time in his career, becoming the youngest man to do so since Rafael Nadal in 2005.
Sebastián Báez defeated Frances Tiafoe in the final, 6–3, 6–2 to win the singles tennis title at the 2022 Estoril Open. It was his maiden ATP Tour title.
Bernabé Zapata Miralles was the defending champion but lost in the quarterfinals to Andrej Martin.
Bernabé Zapata Miralles was the defending champion but chose not to defend his title.
Daniel Altmaier was the defending champion but chose not to defend his title.
Tomás Barrios Vera was the defending champion but chose not to defend his title.
Pedro Martínez was the defending champion but lost in the first round to Kimmer Coppejans.