Jenson Button questioned George Russell over his irritable radio messages to his team during the Mexican Grand Prix.
While the race was devoid of much overtaking action, a tactical battle was playing out at the front. Red Bull had started their drivers on soft tyres, while Mercedes opted for the more durable but slower mediums.
In the early stages it looked like the Silver Arrows had picked the best strategy. The Red Bulls struggled to pull away despite their faster tyres, and pitted for fresh mediums at a point which made it seem unlikely they would be able to reach the end of the race without at least one more visit to the pit lane.
