18:45TennisUS Open 2017: Johanna Konta v Aleksandra KrunicBBC Radio 5 Sports Extra Duration: 5 hours, 30 minutes Mon 28th Aug 2017, 18:45 on BBC Radio 5 Sports ExtraLive tennis coverage from the opening day of the US Open in New York, including commentary Johanna Konta v Aleksandra Krunic.GenresSportTennisSeriesTennis Source: BBC Online