Kiwi Scott Dixon has finished second at the Indycar Championship season finale at Sonoma Raceway to capture his fifth title.
Starting second on the grid, Dixon drove a smart and sound race to hold his place right throughout.
Championship rival Alexander Rossi made a mistake on the opening lap when he made contact with teammate Marco Andretti and did damage to his nose cone that resulted in a puncture. He was forced to pit and fell to the back of the field.
![Scott Dixon celebrates winning the 2018 IndyCar Series Championship. Photo / Getty Images](https://www.nzherald.co.nz/resizer/v2/57CDBJTRC4XA7WK34D66RMQN4U.jpg?auth=1d05ec37a6aa89d69c1a409f8b020ad7faf925a83cd4b52bb8cbf6d566d6c78d&width=16&height=11&quality=70&smart=true)
Rossi took advantage of a perfectly-timed caution period to get back into the battle but wasn't able to get close enough to Dixon to mount a proper shot at the title.