The United States defeated Brazil for a third time at the Olympics to claim a record-extending fifth women’s football gold medal with a 1-0 win at the Paris Games on Saturday. Forward Mallory Swanson scored the winner in the 57th minute as she made a perfectly timed run into the box from the left side to beat Brazilian keeper Lorena. “I had a couple of opportunities earlier. I tried to put those behind me. It was a great feeling to score,” Swanson said. Swanson had a shot brilliantly denied by Lorena in the 26th. Brazil, meanwhile, had a goal ruled out in the 16th because goalscorer Ludmila wa…