Lewis Hamilton was left at a loss for words during an unheard radio exchange with Ferrari race engineer Riccardo Adami at the Miami Grand Prix. The seven-time world champion had a tough weekend at the Formula 1 event,

From the moment Lewis Hamilton lowered himself into a Ferrari cockpit for the first time, it was inevitable that every one of Red 44's radio transmissions, strategy decisions and race results would be scrutinized to the nth degree.

"Have a tea break!" Hamilton's radio jab doesn't expose a rift in the team, but there is a growing sense of urgency