Rally On The River was the launch event for American Express' sponsorship of the 2015 US Open featuring Maria Sharapova, John Isner, Monica Puig and Kevin James. This experiential takeover of Pier 97 projected real-time graphic animations, fluid dynamics and particle explosions on a wall of water overlooking the Hudson River.

Chelsea worked on the creative concept at Momentum Worldwide in collaboration with Bionic League. Produced by Momentum Worldwide, Volvox Labs & PMK BNC.