Simone Biles' golden run in Rio is picking up steam. Surprisingly, so is Great Britain's. Biles added a third gold medal to her rapidly rising haul on Sunday, easily capturing the women's vault final.

Rio-time updates: follow the action with our daily live blog

The 19-year-old helped the 'Final Five' to team gold and also dominated the all-around competition last week, averaged 15.966 on her two vaults on Sunday to become the first woman from the USA to win the event at the Olympics.

Minutes after Biles picked up the first vault gold medal ever by a US female gymnast, British star Max Whitlock earned his second gold of the day — and the second ever for his country in gymnastics — when he won the pommel horse to back up his victory earlier in the afternoon on floor exercise.

While the day may belong to Whitlock, the games belong to Biles. Her score was more than .7 better than silver medallist Maria Paseka and bronze medallist Giulia Steingruber of Switzerland, showcasing the gap between Biles and the rest of the world.

Rio 2016 Gymnastics: schedule and results

Going last among the eight female finalists, Biles drilled her Amanar — a round off onto the block followed by 2 ½ twists — and put up a 15.9 to take the lead. Needing only to land her second vault to win, Biles was near perfect. Her score of 16.033 for her "Cheng" was the best of the night.

Biles' three gold medals in Rio are also the most by a female gymnast from the USA in one Olympics. The gold also gives Biles 17 world championship or Olympic medals, the most ever by an American woman. She will get a chance to stand atop the podium again when she competes in the balance beam finals on Monday and the floor exercise final on Tuesday.

India's Dipa Karmakar made history by being the first female gymnast from her country to compete in the Olympics and make an event final by finishing fourth. Oksana Chusovitina's seventh trip to the Olympics ended with a seventh-place finish for the 41-year-old from Uzbekistan. Chusovitina said afterward she's already planning to train all the way to the 2020 games in Tokyo.

Whitlock became the first gymnast from Great Britain to win Olympic gold by edging Brazil's Diego Hypolito in the men's floor exercise final. Whitlock's score of 15.633 was just enough to edge local-favourite Hypolito, who finished with a 15.533. His compatriot Arthur Mariano earned bronze for the host country, much to the delight of the crowd.

USA gymnast Sam Mikulak finished eighth, his routine disrupted by an explosion of applause from the crowd inside Rio Olympic Arena, when Mikulak - going last - made a mistake to assure the Brazilians of two medals. Mikulak said he "got pretty rattled" by the noise.

Buy your tickets for the Rio 2016 Olympic Games

USA did receive a jolt of good news for the US men's program, which finished fifth in the team competition and failed to pick up a medal in the all-around last week, when Alex Naddour picked up bronze on pommels behind Whitlock and his team-mate Louis Smith.

Surprisingly, the USA's spot in the mix at the top has been taken by Great Britain, who have revamped their program in recent years, winning a team bronze at London 2012 four years ago. They finally have their first two golds thanks to the 23-year-old Whitlock.