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With Red Bull third in the constructors' championship after two races, Tsunoda says Horner has tasked him with finishing as close as possible to Dutchman Verstappen to aid the team's cause.

Red Bull are third in the constructors' championship after two races, behind McLaren and Mercedes, and Verstappen has expressed his belief that their car may be only the fourth fastest in the field.

Perez's performances fell off a cliff, and the team slumped to third in the constructors' championship despite Verstappen winning a fourth world title by 63 points.

"But what won us the constructors' last year was how we helped one another and how we kept things clean."

Both Wolff and Russell said they expected McLaren to start this season with an advantage after the performance the reigning constructors' champions showed in pre-season testing in Bahrain last month.