02:305 Live SportUS Open TennisSerena Williams v Victoria AzarenkaBBC Radio 5 Live Duration: 2 hours, 30 minutes Fri 11th Sep 2020, 02:30 on BBC Radio 5 LiveLive tennis commentary of Serena Williams v Victoria Azarenka in their US Open semi-final.GenresSportBrand5 Live SportSeries5 Live Sport: US Open Tennis Source: BBC Online