2021 Challenger de Buenos Aires
The 2021 Challenger de Buenos Aires was a professional tennis tournament played on clay courts. It was the tenth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Buenos Aires, Argentina between 18 and 24 October 2021. Singles main-draw entrants. Other entrants. The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: