2021 Iași Open
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The 2021 Iași Open was a professional tennis tournament played on clay courts. It was the second edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Iași, Romania between 12 and 18 July 2021.
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| FRA | Hugo Gaston | 162 | 1 |
| FRA | Enzo Couacaud | 164 | 2 |
| FRA | Alexandre Müller | 199 | 3 |
| BRA | Felipe Meligeni Alves | 221 | 4 |
| CZE | Zdeněk Kolář | 223 | 5 |
| ROU | Marius Copil | 224 | 6 |
| FRA | Maxime Janvier | 232 | 7 |
| BUL | Dimitar Kuzmanov | 246 | 8 |
- 1 Rankings as of 28 June 2021.
Other entrants
The following players received wildcards into the singles main draw:
- Romania Cezar Crețu
- Romania David Ionel
- Romania Ștefan Paloși
The following player received entry into the singles main draw using a protected ranking:
The following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
- Bulgaria Alexandar Lazarov
- Czech Republic David Poljak
- Romania Dan Alexandru Tomescu
- Serbia Miljan Zekić
The following player received entry as a lucky loser:
Champions
Singles
- Czech Republic Zdeněk Kolář def. France Hugo Gaston 7–5, 4–6, 6–4.
Doubles
- Brazil Orlando Luz / Brazil Felipe Meligeni Alves def. Argentina Hernán Casanova / Spain Roberto Ortega Olmedo 6–3, 6–4.