2021 Campeonato Internacional de Tênis de Campinas – Singles
Francisco Cerúndolo was the defending champion but lost in the semifinals to Sebastián Báez. Báez won the title after defeating Thiago Monteiro 6–1, 6–4 in the final. Seeds

Draw

Finals

Top half

Bottom half

References

External links
Main draw
Qualifying draw

2021 ATP Challenger Tour
2021 Singles