Moreno De Alboran won 44 of his 56 first-service points (79 percent) and saved two of three break points to take down Diaz Acosta. His next opponent will be Belgian qualifier David Goffin, who was a 6-4, 6-4 winner over Frenchman Arthur Rinderknech.

Italy’s Matteo Berrettini, playing on a protected ranking, swiftly upset sixth seed Alexander Shevchenko of Kazakhstan 6-2, 6-1. Fellow Italian and No. 8 seed Flavio Cobolli beat Jordanian wild card Abdullah Shelbayh 6-1, 6-4.

Stan Wawrinka of Switzerland, Italian qualifier Fabio Fognini, India’s Sumit Nagal, Australia’s Aleksandar Vukic and Spain’s Roberto Carballes Baena also advanced to the second round.

Millennium Estoril Open

Steady rain washed out Tuesday’s schedule in Estoril, Portugal.

Among the matches now slated for Wednesday include three that were suspended in progress. Notably, Chilean Cristian Garin led Austria’s Jurij Rodionov 7-6 (3), 4-5, 30-30 in a match that began Monday night.

Frenchmen Arthur Fils and Gael Monfils, the fifth and seventh seeds, are among those now scheduled to compete Wednesday.