Australian teenager Alex de Minaur has continued his stellar 2018 with a straight-sets win over Gastao Elias at the Estoril Open in Portugal.

Brisbane International semi-finalist de Minaur, who received a wildcard for the event, did it easy against the Portuguese, winning 6-3 6-1 to set up a round-of-16 clash with British third seed Kyle Edmund.

Pedro Sousa upset Frenchman Gilles Simon to advance while Frances Tiafoe of the United States fought back from a set down to eliminate divisive countryman Tennys Sandgren.

South Africa’s Kevin Anderson (8) and Pablo Carreno Busta of Spain (11) are the highest-ranked players contesting the claycourt tournament on the Portuguese Riviera.