PARIS — Canada shocked the athletics world on Friday, blazing to victory in the Olympic men’s 4×100-metre relay at a packed and rainy Stade de France.

The veteran team of Aaron Brown, Jerome Blake, Brendon Rodney and Andre De Grasse went round the purple track in 37.50 seconds. South Africa was second in 37.57, Great Britain third in 37.61.

The highly favoured American team of Christian Coleman, Kenny Bednarek, Kyree King and Fred Kerley was disqualified yet again for a baton pass out of the zone on the back straightaway.

More to come.