The 2012 London Olympics saw upsets in gymnastics and track and field Monday.

On the women's uneven bars, Russia's Aliya Mustafina won the gold medal over China's Kexin He, who won silver, and Britain's Beth Tweddle, who won bronze. U.S. teenage gymnast Gabby Douglas, who has emerged as a star of the Games, was competing for her third gold medal in the event, but she placed eighth.

Brazil's Arthur Nabarrete Zanetti won gold in the men's rings final, besting China's Yibing Chen, who finished second, and Italy's Matteo Morandi, who placed third.

South Korea's Hak Seon Yang placed first in the men's vault, ahead of Denis Ablyazin at second and Ukraine's Igor Radivilov at third.

On the track, Russian pole vaulter Yelena Isinbayeva had hoped to be the first female track and field athlete to win three individual Olympic titles in three successive games. But American Jenn Suhr gave a gold medal vaulting performance, forcing Isinbayeva to settle for bronze.

In the 50-meter rifle three position event, Italy's Niccolo Campriani placed first, ahead of South Korea's Jonghyun Kim at second and America's Matt Emmons at third.

The day also included track and field races for the men's 400 meter hurdles and 400 meters, as well as shot put and steeplechase.

Competitors on the mat faced off in the 60 kilogram, 84 kilogram and 120 kilogram wrestling matches, as well as the men's 105 kilogram weightlifting.

Meanwhile, the U.S. basketball team, which barely won its game against Lithuania last week, beat Argentina 126-97.

China leads the overall medal count for the 2012 London Olympics with 64, including 31 gold. A close second is the United States with 63 medals including 29 gold. Russia has overtaken Britain for third in the medal race, with 42 including seven gold.