| 2021 Amex-Istanbul Challenger II | |
|---|---|
| Date | 13–19 September | 
| Edition | 35th | 
| Surface | Hard | 
| Location | Istanbul, Turkey | 
| Champions | |
| Singles | |
| .svg.png.webp) James Duckworth | |
| Doubles | |
|  Radu Albot /  Alexander Cozbinov | |
The 2021 Amex-Istanbul Challenger II was a professional tennis tournament played on hard courts. It was the 35th edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Istanbul, Turkey between 13 and 19 September 2021.
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed | 
|---|---|---|---|
| .svg.png.webp) AUS | James Duckworth | 68 | 1 | 
|  MDA | Radu Albot | 108 | 2 | 
|  COL | Daniel Elahi Galán | 110 | 3 | 
|  JPN | Yasutaka Uchiyama | 123 | 4 | 
| .svg.png.webp) AUS | Marc Polmans | 148 | 5 | 
|  RUS | Evgeny Donskoy | 152 | 6 | 
|  UKR | Illya Marchenko | 154 | 7 | 
|  EGY | 
- 1 Rankings are as of 30 August 2021.[1]
Other entrants
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
 Nick Chappell Nick Chappell
.svg.png.webp) Christopher Heyman Christopher Heyman
 Laurent Lokoli Laurent Lokoli
 Aldin Šetkić Aldin Šetkić
The following player received entry as a lucky loser:
Champions
Singles
.svg.png.webp) James Duckworth def. James Duckworth def. Wu Tung-lin 6–4, 6–2. Wu Tung-lin 6–4, 6–2.
Doubles
 Radu Albot / Radu Albot / Alexander Cozbinov def. Alexander Cozbinov def. Antonio Šančić / Antonio Šančić / Artem Sitak 4–6, 7–5, [11–9]. Artem Sitak 4–6, 7–5, [11–9].
References
- ↑ "Rankings | Singles | ATP Tour | Tennis". ATP Tour.
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