Daniel Ricciardo says that he and Red Bull team-mate Sebastian Vettel have agreed to race each other 'hard' in 2014.
Ricciardo joined Red Bull at the start of the year and has beaten Vettel across the last two races in Bahrain and China.
The Australian driver believes that competition between them must be hard if they are to respect each other at the end of the championship.
"We know it ourselves and even told each other that we want to race hard," Ricciardo told the West Australian.
"I want to race the best version of Seb and he wants to race the best version of me. At the end of the day I think we'll both respect whoever's done a better job. Deep, deep down none of us like losing. If Seb's done a better job this year, I won't like it, but I'll definitely respect him for it and give him the credit he deserves. I think that's a two-way street. We understand what a fair fight is and we enjoy that."
Ricciardo also added that drivers must obey the orders of the team on the pit wall.
"We throw up different scenarios and discuss it, discuss it between drivers and between principals and engineers," he said. "It is our responsibility to obey it, unless it's completely out of order and then we can obviously try and put up a fight and give our reasons.
"But the team are doing all the calculations on pit wall during the race and you have to respect what they're saying. It's not always nice if you are being told to move over. It's not nice being that slower car, it's frustrating."