Dominic Thiem of Austria poses with the Rio Open trophy on Sunday. Pic/AFP

Rio de Janeiro: Dominic Thiem continued to showcase himself as a future star by winning an eighth ATP Tour title with success at the Rio Open. The 23-year-old, ranked eighth in the world, beat Spaniard Pablo Carreno Busta 7-5 6-4 in just over 90 minutes on the Brazilian clay to go the whole week without dropping a set.