Jenson Button is adamant Nico Rosberg is too strong and intelligent to be undone by any mind games Lewis Hamilton may play.
If the early season form is anything to go by, this year's Championship will be decided between the two Mercedes team-mates.
After five grands prix it is Hamilton who has the advantage out on the track and in the standings having claimed four wins to his team-mate's one. As a result, he now leads the German by three World Championship points.
And although it all seems calm and happy at Mercedes at the moment, there are some suggestions that Hamilton is already playing mind games with his team-mate.
Although he claimed pole position and the victory last weekend in Spain, Hamilton insisted several times that Rosberg had been the quicker driver. The implication of that being, and yet he still beat him.
Button, though, is confident Rosberg won't allow the Brit into his head.
"I am sure there will - if there aren't already - be mind games going on. There were a few things he played on me," Button, who partnered Hamilton at McLaren, told BT Sport.
"It would work on some drivers, whereas others it just makes them stronger because they laugh it off.
"Nico is intelligent to know if Lewis is playing mind games or not, which in some ways could help Nico or harm him. He might just end up getting fed up with it.
"But Lewis is fully of confidence at the moment and he is a fierce competitor when he is like that, even when he is not having a good day."
So far this season Mercedes have played fair with both drivers even allow them to race side-by-side in Bahrain and to the line in Spain.
Button reckons the Brackley team, for their sake and for F1, will continue to keep a level playing field.
"The thing is with that team is because they are going to walk away with it - I know we are only five races in, but they have such a big lead - they're not going to favour just one driver.
"They will let their drivers race because they need to keep the show going, and we need them to keep the show going and let both drivers race.
"So there is no point trying to get the team behind you because they won't. I think they will be very fair, and they need to be for the sport."