USA´s Frances Tiafoe in action against USA's Tennys Sandgren during their first round match of the Estoril Open tennis tournament in Cascais, near Lisbon, Portugal, 30 April 2018. EPA-EFE/JOSE SENA GOULAO Australia's Alex de Minaur in action against Portugal´s Gastao Elias during their first round match of the Estoril Open tennis tournament in Cascais, … [Read more...] about Frances Tiafoe, Gilles Simon, & More Photos From The Estoril Open Tennis Shared By 10sBalls