Watch the moment Lewis Hamilton and Valtteri Bottas collided at the start of the Bahrain GP.
The incident was to prove costly for both drivers: while Bottas was subsequently handed a drive-through penalty for causing the accident, Hamilton's Mercedes car was heavily damaged during the collision with the world champion relegated to sixth at the end of the first lap.
"Lewis left the door open but Valtteri shouldn't have walked through it. He was a day late and a dollar short walking through there," said Sky F1 pundit Martin Brundle.
Mercedes calculated the damage done to Hamilton's W07 was worth a second of track time per lap.
"When I was coming into Turn One, at the point I brake I was turning into the corner. Everyone seemed to go very tight inside and it was too late," Bottas told Sky F1.
"I was trying to brake as hard as I could. I got a penalty and I'm sure he lost some places because of that. It's a shame."