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Open Image ModalRussian gymnast Anastasia Grishina performs on the uneven bars during the Artistic Gymnastics women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Julie Jacobson)
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Open Image ModalChinese gymnast He Kexin performs on the uneven bars during the Artistic Gymnastics women's team final at the 2012 Summer Olympics, Tuesday, July 31, 2012, in London. (AP Photo/Julie Jacobson)
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Open Image ModalGreat Britain's Hannah Whelan on the uneven bars during the Artistic Gymnastics Women's Team Final at the North Greenwich Arena during the fourth day of the London 2012 Olympics.
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Open Image ModalGymnast Ana Sofia Gomez Porras of Guatemala performs on the balance beam during the Artistic Gymnastics women's qualification at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Gregory Bull)
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Open Image ModalVenezuelan gymnast Jessica Lopez chalks the uneven bar before her performance during the artistic gymnastics women's qualifications at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Matt Dunham)
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Open Image ModalUSA's Kyla Ross competes in the uneven bars during the women's gymnastics team final during the Summer Olympic Games in London, England, Tuesday, July 31, 2012. Photo by Nhat V. Meyer/San Jose Mercury News
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Open Image ModalRomania's gymnast Sandra Raluca Izbasa performs on the vault during the Artistic Gymnastics women's qualification at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Gregory Bull)
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Open Image ModalChinese gymnast Sui Lu performs on the balance beam during the Artistic Gymnastic women's qualifications at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Julie Jacobson)
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Open Image ModalItaly's Vanessa Ferrari competes on the uneven bars during the Artistic Gymnastics team qualification at the North Greenwich Arena, London on the second day of the London 2012 Olympics.
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Open Image ModalChinese gymnast Feng Zhe performs on the rings during the Artistic Gymnastic men's team final at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Julie Jacobson)
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Open Image ModalU.S. gymnast John Orozco botches his dismount on the vault during the Artistic Gymnastic men's team final at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Gregory Bull)
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Open Image ModalGerman gymnast Philipp Boy falls off the uneven bars during the Artistic Gymnastic men's team final at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Julie Jacobson)
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Open Image ModalGerman gymnast Marcel Nyugen performs on the uneven bars during the Artistic Gymnastic men's team final at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Julie Jacobson)
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Open Image ModalJapan's Asuka Teramoto on the vault
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Open Image ModalNetherland's Celine van Gerner competes on the uneven bars during the Artistic Gymnastics team qualification at the North Greenwich Arena, London
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Open Image ModalSwiss gymnast Giulia Steingruber performs on the balance beam during the Artistic Gymnastics women's qualification at the 2012 Summer Olympics, Sunday, July 29, 2012, in London. (AP Photo/Gregory Bull)