The 2026 LA 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 at the São Paulo Jockey Club, in São Paulo, Brazil between 23 and 29 March 2026.

Singles main draw entrants Seeds Country Player Rank1 SeedEmilio Nava741Thiago Agustín Tirante812Román Andrés Burruchaga1023Tomás Barrios Vera1194Jaime Faria1575Hugo Dellien1596Alex Barrena1737Juan Carlos Prado Ángelo2068 1 Rankings as of 16 March 2026.

Other entrants The following players received wildcards into the singles main draw: Guto Miguel Eduardo Ribeiro Thiago Agustín Tirante

The following players received entry into the singles main draw as alternates: Daniel Dutra da Silva Pedro Sakamoto Juan Bautista Torres

The following players received entry from the qualifying draw: Boris Arias Victor Braga João Vítor Gonçalves Ceolin Johannes Ingildsen João Eduardo Schiessl Rafael Tosetto

The following players received entry as lucky losers: Conner Huertas del Pino José Pereira

Champions Singles

Román Andrés Burruchaga def. Jaime Faria 6–7(5–7), 6–4, 6–4.

Doubles

Gustavo Heide / Guto Miguel def. Felipe Meligeni Alves / João Lucas Reis da Silva 6–4, 6–2.

References