On Thursday, Michael Phelps won the Olympic 200-meter individual medley, grabbing his 22nd gold medal and becoming the first swimmer to win the same event at four consecutive games.
Simone Manuel earned her place in the history books for her race in Rio Thursday night as the first African-American to win gold in women's swimming.
Simone Biles' adoptive mother hails from Belize, where people have taken notice of the teenage gymnastics sensation.
So far, the 10 athletes have had some defeats, but say they are proud to have made it to the Olympics, raising awareness about the plight of refugees.
On Day 6, gymnasts and swimmers will take on new challenges.
American Kristin Armstrong won her third gold medal in the Olympic time trials Wednesday, with a time of 44 minutes, 26.42 seconds.
US swimmers Katie Ledecky and Michael Phelps gave US swim fans a gold-medal performance on Tuesday, suggesting that the US swim team's competitive past has a strong future.
After 40 years in the sport and 11 Olympic games, US Gymnastics Olympic coach Márta Károlyi is retiring.