2021 Biella Challenger Indoor II – Singles
This was the second of seven editions of the tournament in the 2021 tennis season. Illya Marchenko was the defending champion but lost in the quarterfinals to Andreas Seppi. Kwon Soon-woo won the title after defeating Lorenzo Musetti 6–2, 6–3 in the final. Seeds Draw Finals Top half Bottom half References External links Main draw Qualifying draw Biella Challenger Indoor II - 1