Daniel Ricciardo has admitted that his last chance of winning a race may have come and gone in Singapore.
The Australian was famously disappointed earlier this year when a team error cost him victory in Monaco, and on the similar Singapore street layout last Sunday, he only narrowly missed victory in a duel against Mercedes's Nico Rosberg.
"This is not the first time victory has narrowly escaped us this year," Ricciardo told French magazine Auto Hebdo.
"We've been close but I can't be too disappointed.
"I think we ran Mercedes close last weekend. We tried a strategic move in the end and missed it by a breath, but it was fun," he said.
Ricciardo said that he is not giving up on 2016, but acknowledges that Singapore was definitely Red Bull's last big chance of beating the silver cars.
"I'm all about 2016," he insisted. "I want a victory by the end of the season.
"In the dry, [Singapore] was probably our last chance. But if the rain comes when we want it, it could still work out."
The championship continues with the Malaysian Grand Prix next weekend.