Scott Dixon overtook race leader Mike Conway on Lap 83 of 85 and went on to win the GoPro Grand Prix of Sonoma.
Dixon, who started third in the No. 9 Target Chip Ganassi Racing car, led Ryan Hunter-Reay across the finish line by 1.1359 seconds. Simon Pagenaud finished third after overtaking Conway, whose No. 20 Fuzzy’s Vodka Ed Carpenter Racing car ran out of fuel with about 350 yards left.