Team USA retains a comfortable lead over second-place China by adding 10 more medals in Day 9.
Simone Biles became the first US women to win Gold in the Women's vault.
Usain Bolt added a gold for Jamaica in the 100-meters (his 3rd Gold in the event). Great Britain's count also increased with help from Andy Murray and Justin Rose. Rose won Gold in men's golf. This was the first time in 112 years that golf was included in the Olympic games.
And Great Britain closed the gap on China and is now within 11 medals of becoming number 2 in the medal count.
Here is a a list of all ten Day 8 U.S. medal winners:
Simone Biles, Women's vault (gymnastics)
Jack Sock and Bethanie Mattek-Sands, Mixed doubles (tennis)
Justin Gatlin, Men's 100-meter (track and field)
Madison Kocian, Women's uneven bars (gymnastics)
Venus Williams and Rajeev Ram, Mixed doubles (tennis)
LaShawn Merritt, Men's 400-meter (track and field)
Nico Hernandez, Men's light fly 49-kilogram (boxing)
Alex Naddour, Men's pommel horse (gymnastics)
Matt Kuchar, Men's golf
Sarah Robles, Women's over 75-kilogram (weightlifting)
The Top Ten countries at the end of Day 9 are: