Team USA's swimming team are celebrating a double victory tonight after winning two gold medals. Michael Phelps takes home his 19th gold after winning the men's 4x100m freestyle relay. The 31-year-old, 22-time Olympic medalist, swam the second leg of the relay for Team USA - despite not competing in any freestyle events at the U.S. trials or in the preliminaries in Rio. He was cheered on by his girlfriend Nicole Johnson, who was sat with their son Boomer, and Phelps' mom Deborah.