Rio de Janeiro – Dominic Thiem also lost early on Monday at the ATP 500 tournament in Rio de Janeiro following his knockout round in Buenos Aires. The 29-year-old from Lower Austria lost to the Brazilian Thiago Monteiro 1: 6.6: 3.6: 7 (2) at the start of the clay court tournament, which he had already won in 2017. It was Thiem’s first meeting with ATP-83, which is 13 places ahead of him in the world rankings.