Through two days in Rio the United States has racked up more medals than any other country: 3 gold, 5 silver and 4 bronze.
If you missed it over the weekend, here are the top three things you need to know.
1. Michael Phelps wins 19th gold medal
The US men took home the gold in the 4X100 freestyle swim on Sunday, and Michael Phelps was the key with an explosive segment leg of the race. Phelps and the US were in second place until Phelps made the turn after 50 meters and they never looked back. Nathan Adrian sped his way to victory on the final 100 meters.
Phelps has 19 career gold medals and he'll swim in 200 meter butterfly heats Tuesday and Wednesday.
2. Katie Ledecky crushes record en route to gold
The American sensation who won gold as a 15-year-old at the 2012 Olympics in London shattered her world record in the 400 meter freestyle on Sunday. The yellow line that usually paces the field on TV was trailing Ledecky from the start as she cruised to a time of 3:56:46, nearly two seconds better than her previous mark of 3:58:37.
3. US women dominant gymnastics
Simone Biles and Aly Raisman will compete in the gymnastics all-around final after finishing as the top two scorers for Team USA, leaving Gabby Douglas just behind and out of the all-around competition. Only two people from a country can advance to the final otherwise Douglas' scores would have easily allowed her to join.
As for the team competition, the US is the top qualifier for Tuesday's all-around medal round. The individual all-around final is Thursday.