10 spectacular moments captured during Rio Olympics

Doaa Elghobashy of Egypt and Kira Walkenhorst of Germany compete int he preliminary beach volleyball event.

Samir Ait Said of France breaks his leg during competition on the vault

Sara Dosho of Japan celebrates with her coach after winning the gold medal in the wrestling final.

Nikki Hamblin of New Zealand stops running during the race to help fellow competitor Abbey D'Agostino of USA after D'Agostino suffered a cramp in the women's 5000m preliminary

Usain Bolt of Jamaica and Andre De Grasse of Canada compete in the 200m semifinals.

Simone Biles of the U.S. competes on her way to gold in the vault during the women's individual all-around final.

Kristin Armstrong of the U.S. celebrates with her son after winning her third gold medal in women's cycling time trial.

A general view of the Olympic diving pool and the pool for the waterpolo and synchronized swimming. The water in the Olympic diving pool appeared to turn a bright green hue on Tuesday, causing puzzlement among divers and audiences as the women's 10 meter platform final progressed, contrasting sharply against the still-blue color of another pool beside it.

Brazilian women's rugby player Isadora Cerullo melted hearts when she accepted a marriage proposal from her girlfriend at the medals ceremony for the first Olympic rugby sevens competition. Television cameras and photographers captured the moment that Marjorie Enya, a manager at the Deodoro stadium in Rio where the competition was played, took the microphone to pop the question to her girlfriend of two years on the pitch. A tearful Cerullo accepted and, with no ring, 28-year-old Enya tied a ribbon to her finger.