Nick Cassidy believes his inexplicable mistake on the penultimate lap of the opening Portland Formula E race cost him a chance to put the championship out of reach of his and Jaguar’s rivals.

Cassidy would have extended his championship lead to 49 points with just three races left had he not spun for first to 19th with just one corner and one lap left.

“There were a few chains of events I guess,” said Cassidy of the incident in which he ran wide into the Turn 10/11 chicane then looped the car over the grass.

“But at the end of the day, I made a really big error that I’ll regret for a long time.

“I was offline and I was deep. Just a big, big error.”