Day 8 in Rio saw Michael Phelps earn his 23rd gold medal in what he says was his last race. It saw Jamaican Elaine Thompson unseat countrywoman Shelly-Ann Fraser-Pryce as world's fastest woman. It saw longshot Monica Puig win the women's tennis singles championship -- and Puerto Rico's first-ever gold. It saw Neymar score his first goal in Rio. It saw Mo Farah defend his 10,000m title, cementing his place as an all-time great. And it saw a steeplechaser run more than half a mile without a shoe.
Sound fun? It certainly was! Relive the day by watching all the top highlights below.