Track: A challenge for Bolt, gold for Jamaica, sweep for US (Yahoo Sports)

It’s no easy thing to push Usain Bolt, even in an Olympic warm-up race. It kept going with another Jamaican, Elaine Thompson, completing the first 100-200 women’s double since 1988. Brianna Rollins, Nia Ali and Kristi Castlin finished 1-2-3 in the 100-meter hurdles to give the United States its first sweep in the event, its seventh in the history of Olympic track and the 23rd for U.S. women, regardless of sport, over the history of the Summer Games.