| 2021 Wolffkran Open | |
|---|---|
| Date | 25 – 31 October |
| Edition | 5th |
| Surface | Carpet, Indoor |
| Location | Ismaning, Germany |
| Champions | |
| Singles | |
 Oscar Otte | |
| Doubles | |
Andre Begemann /  Igor Zelenay | |
The 2021 Wolffkran Open was a professional tennis tournament played on carpet courts. It was the fifth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Ismaning, Germany between 25 and 31 October 2021.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 AUS | Jordan Thompson | 72 | 1 |
 CZE | Jiří Veselý | 77 | 2 |
 ITA | Andreas Seppi | 98 | 3 |
| GER | Yannick Hanfmann | 127 | 4 |
| GER | Oscar Otte | 131 | 5 |
| CZE | Tomáš Macháč | 140 | 6 |
 USA | Maxime Cressy | 143 | 7 |
 FRA | Quentin Halys | 150 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
Oscar Otte def. Lukáš Lacko 6–4, 6–4. Andre Begemann / Igor Zelenay def. Marek Gengel / Tomáš Macháč 6–2, 6–4.The 2019 Liuzhou Open was a professional tennis tournament played on hard courts. It was the second edition of the tournament for men and fourth edition for women. It was the part of the 2019 ATP Challenger Tour and 2019 ITF Women's World Tennis Tour. It took place in Liuzhou, China between 21 October and 3 November 2019.
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