RIO DE JANEIRO (AP) — It’s no easy thing to push Usain Bolt, even in an Olympic warm-up race.

Might be even tougher upstaging him.

But that happened on a wild Wednesday night in track. It began with the Jamaican star exchanging smiles, then wagging his finger at a brash up-and-comer who dared challenge him in the 200-meter semifinals. It kept going with another Jamaican, Elaine Thompson, completing the first 100-200 women’s double since 1988. And it closed with an American sweep of the hurdles to put the cherry on top of a seven-medal day for the United States on the track.

http://www.msn.com/en-us/sports/news/track-a-challenge-for-bolt-gold-for-jamaica-sweep-for-us/ar-BBvKQg6

Some things don’t change much in track and field at the Olympics. Usain Bolt easily advances to the 200-meter final. Kenya wins yet another steeplechase gold medal, and Ashton Eaton leads the decathlon.

Source: Track: A challenge for Bolt, gold for Jamaica, sweep for US