The voice of boxing to call out F1 title rivals

FILE PHOTO: Announcer Michael Buffer before the fight Action Images via Reuters / Andrew Couldridge

LONDON (Reuters) - Formula One's American bosses have hired boxing announcer Michael Buffer to bring some big fight buzz to the title tussle between Lewis Hamilton and Sebastian Vettel at this month's U.S. Grand Prix.

Buffer's rolling vowels and drawn-out signature call of 'Let's get ready to rumble' after introducing the contenders have become a hallmark of the biggest bouts from Las Vegas to London.