The 2021 Sparkassen ATP Challenger was a professional tennis tournament played on indoor hard courts in Ortisei, Italy between 8 and 14 November 2021. It was the twelfth edition of the tournament and was part of the 2021 ATP Challenger Tour.

Singles main-draw entrants Seeds Country Player Rank1 SeedOscar Otte1261Maxime Cressy1332Quentin Halys1463Emilio Gómez1494Federico Gaio1515Fernando Verdasco1656Marc-Andrea Hüsler1867Alessandro Giannessi1928 1 Rankings are as of 1 November 2021.

Other entrants The following players received wildcards into the singles main draw: Matteo Arnaldi Luca Nardi Alexander Weis

The following players received entry from the qualifying draw: Alexander Cozbinov Nerman Fatić Lucas Miedler Tobias Simon

Champions Singles

Oscar Otte def. Maxime Cressy 7–6(7–5), 6–4.

Doubles

Antonio Šančić / Tristan-Samuel Weissborn def. Alexander Erler / Lucas Miedler 7–6(10–8), 4–6, [10–8].

References