The United States continued their dominance of the Olympic 4x400 metres relay on Saturday but only just, as Rai Benjamin held off Botswana's Letsile Tebogo in a thrilling last-leg battle between two individual gold medallists.
The United States team broke their own world record in the 4x400 mixed relay in the opening heats at the Paris Olympics on Friday
A summary of Saturday's Track and Field action at the Tokyo Olympics.
The Italian and Japanese battled shoulder-to-shoulder as the leading pair in the final 4km, but the Italian coped well with the pressure and accelerated in the final 300m to seal the gold medal.
