2021 TK Sparta Prague Open
The 2021 TK Sparta Prague Open was a professional tennis tournament played on clay courts. It was part of the 2021 ATP Challenger Tour. It took place in Prague, Czech Republic between 9 and 15 August 2021. Singles main-draw entrants. Other entrants. 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 from the qualifying draw: