The United States Tennis Association is pleased to offer the official iPhone app for the 2013 US Open Tennis Championships, developed by IBM with special features from American Express and Esurance. Follow the action LIVE during the Open, August 26 to September 9, 2013.Key Features:TimelineCompletely redesigned homepage allows fans to view a chronological timeline of news, photos, videos, tweets and Trending Topics throughout the tournament.ScoresLIVE exclusive point-by-point scoring updates and completed match results during the US Open.VideoLIVE streaming video during Labor Day and Finals Weekends, and on-demand video highlights, press conferences, analysis and more throughout the tournament.US Open TrendCast American Express Special FeatureFollow the US Opens hottest social trends like never before with the top five topics on our Heat Index fan can join in all across the globe on the latest trending conversation.NewsLatest news updates from on and off the court throughout the tournament.USOpen.org Radio - American Express Special FeatureLIVE streaming ball-by-ball radio coverage featuring Courtside Q&A a live, interactive Q&A with match commentators featuring user-submitted questions via Twitter.Schedule of PlayKeep track of when and where all the matches are throughout the day.DrawsFollow your favorite players and of all the great match-ups.PhotosStunning photo coverage during the US Open.SocialStay connected to the US Open via Facebook, Twitter, Google+, foursquare, YouTube, and Instagram. Visiting the Open A fan's guide to the US Open, featuring an interactive map of the grounds, Esurance Top 10 things to do at the Open and other great spectator info.Push AlertsGet breaking news and player updates as the action happens.NOTE: When you are on the grounds of the USTA Billie Jean King National Tennis Center, be sure to use the "2013 US Open Fans" free WiFi Network