Mercedes F1 boss Toto Wolff says that tension between the drivers is to be expected given that they are fighting each other for the World Championship – and have a significant advantage over the opposition.
Inevitably all eyes will be on Lewis Hamilton and Nico Rosberg in Montreal this weekend.
“The tension is normal,” Wolff told this blog. “You have a season where you can really rewrite history, win the World Championship with a Silver Arrow, and your only enemy is your team mate. And if you get beaten by your team mate you have reasons to be emotional. One weekend it goes in one direction, the other weekend it goes in the other.
“They have a car which is capable of winning the World Championship, both of them are absolute Alpha animals, and I guess it’s going to stay emotional, it’s going to stay intensive, throughout the season. This is the philosophy we have decided and opted for.”
Meanwhile Wolff says he was pleased to emerge from Monaco – a race where the power unit counted for less – with a one-two.
“Monaco is not a circuit where you can really play the engine, it’s downforce, so I’m relieved that that one is done, and with a one-two. I’m pretty confident about Montreal, because again it’s a power circuit, and we have very powerful Mercedes engines in our back. So I’m looking towards Montreal being carefully optimistic.”
Adam Cooper's F1 Blog 
I think Lewis has more raw talent than Nico, but Nico shows more maturity than Lewis is, and is less worried about what other people think of him. Nico’s had a master course on tactical advantages and how to deal with your team mate from Michael Schumacher, yet Lewis tends to under estimate him on a regular basis. Of the two I think Lewis will win the WDC but Nico will make him earn every last point.