All eyes were on double defending champion Shelly-Ann Fraser-Pryce. But it was her fellow-Jamaican Elaine Thompson who ran away with gold in the 100 meters.
Though Fraser-Pryce may have been first out of the blocks Saturday, Thompson powered through for the title in 10.71 seconds. American Tori Bowie lunged at the line for 10.83 and beat Fraser-Pryce by 0.03 seconds.
European champion Dafne Schippers had a bad start and finished fifth with 10.90.
Fraser-Pryce was seeking to become the first women in track to win three Olympic gold medals in a row.