The U.S. now has 26 total medals, with nine gold medals, 8 silver medals and 9 bronze medals.
It's likely that by the end of this year's games, the United States will claim dominance in global sport for the sixth Olympics in a row.
They visualised the medal count per sport in a series of graphics that reflect not just each participating nation's sporting speciality but also historical events - no Olympic Games were held during the two world wars, and twelve of the former Soviet republics competed under the name "Unified Team" at the 1992 Summer Olympics in Barcelona.
Earlier Mack Horton has won Australia's first gold at the Olympics after taking out the 4x100 freestyle race. Both China and the United States won two gold medals, with Katie Ledecky adding another one to her tally, finishing the 4×200 meters freestyle relay with a time no one on this plant can come close to at this point.
Rivalling Team GB will be the usual suspects of the United States, China and Australia, although Olympic heavyweights Russian Federation are likely to face their smallest return for some time due to the bans that have been imposed on a number of their athletes over anti-doping violation allegations. Elsewhere, there was a good performance from Hannah Mills and Saskia Clark in the women's 470 as a first placed finish in the day's first race and a sixth in the second left them third overall. The U.S. men, who took gold in the 4x100-meter free, hold the world and Olympic records in the 200. At first, I thought it was a coincidence, but after noticing many athletes putting their newly-awarded medals in their mouths, I thought there might be a reason behind this weird tradition.
Dressage: The team gold will be decided today with Britain in with a strong shout, just behind 2014 world champions Germany. The United States finished fifth. And even then, the only event that I will make it a point to watch is the men's 100m final. Kazakhstan gives $250,000 and Malaysia generously offers $600,000 for their athlete who will be making the gold, Alabama News reported. Be sure to cheer on hometown favorite Kathleen Baker from Winston-Salem as she is also the No. 1 seed going into tonight's women's finals in the 100 backstroke. This group of women breast strokers has unbelievable early speed and sprint capability, but watch out for Efimova's closing strength at the end of the race.
Athletics: At London 2012 this was the day that kicked off the gold rush and confidence is high in Team GB that "Super Saturday" will be repeated. China's Sun Yang, who is 6-foot-6, heads into tonight as the top seed.