Kenyan David Rudisha produced a last-lap kick to defend his Olympic 800m title in style on Monday.
Rudisha, also the world champion and world record holder, timed a season's best of 1min 42.15sec to become the first man in 52 years to defend the 800m title.
Algeria's reigning Olympic 1500m champion Taoufik Makhloufi took silver in a national record of 1:42.61, with American Clayton Murphy edging French hope Pierre-Ambroise Bosse for bronze (1:42.93).
Olympic Games men's athletics 800m podium:
Gold: David Lekuta Rudisha (KEN)
Silver: Taoufik Makhloufi (ALG)
Bronze: Clayton Murphy (USA)