The US Open's main Arthur Ashe Stadium is to be given a makeover as part of an $800 million renovation project at the Billie Jean King National Tennis Center at Flushing Meadows, US tennis chiefs said Monday. United States Tennis Association chairman Brian Vahaly said the renovations planned for the site marked part of "the largest single investment in the history of this event." The multi-million dollar project will include a transformation of the 24,000-seat Arthur Ashe Stadium, the US Open's main court, a new player performance center and upgrades throughout the complex aimed at improving facilities for fans.