The 2026 Itajaí Open was a professional tennis tournament played on clay courts. It was the first edition of the tournament which was part of the 2026 ATP Challenger Tour. It took place in Itajaí, Brazil between 19 and 25 January 2026.
Singles main draw entrants Seeds Country Player Rank1 SeedHugo Dellien1371Daniel Vallejo1462Alex Barrena1883Álvaro Guillén Meza1934Thiago Monteiro1945João Lucas Reis da Silva2066Gonzalo Bueno2147Thiago Seyboth Wild2168 1 Rankings as of 12 January 2026.
Other entrants The following players received wildcards into the singles main draw: Igor Marcondes Eduardo Ribeiro João Eduardo Schiessl
The following players received entry from the qualifying draw: Mateus Alves Juan Estévez Guido Iván Justo Juan Manuel La Serna Ștefan Paloși Juan Bautista Torres
Champions Singles
Daniel Vallejo def. Thiago Seyboth Wild 7–5, 4–6, 6–2.
Doubles
Igor Marcondes / Eduardo Ribeiro def. Bruno Oliveira / Matheus Pucinelli de Almeida 6–4, 6–4.
References