Lml

After starting on the pole and taking the lead early in the race, Dennis's closest title opponent Cassidy saw his championship hopes evaporate when teammate Sebastien Buemi broke his front wing while racing for Envision Racing.

After holding off early pressure from Nissan's Norman Nato and Jaguar's Sam Bird, the Andretti Autosport driver cruised to a lights-to-flag win after leading every lap of the 24-lap race.