50 Moments that Mattered: Matches under the lights have been a fixture at the #USOpen for decades, with some of the most iconic moments coming once the sun had set. This tradition was born when Manuel Orantes defeated Guillermo Vilas in the 1975 semifinals in the first night match at Forest Hills. #USOpen50 #foresthills #westsidetennisclub #nighttennis #guillermovilas #manuelorantes #tradition #usopentradition