YOKOHAMA, Japan (Reuters) - Brazil captain Dani Alves said his dream had come true after winning an Olympic gold medal at the age of 38 with a 2-1 extra-time victory over Spain in Saturday's final. Everybody trusted in me, and I knew this would be a once-only opportunity, to be able to enjoy this dream," said the former Barcelona defender. "It’s not every day that you become an Olympic athlete, and even less at the age of 38. "I came with the boys to live the dream with them. Alves, who now plays back in Brazil with Sao Paulo, said he has no intention of hanging up his boots yet.