The next Usain or Phelps – global icons based on their dominant performances in Beijing -- could come from field hockey or judo. Here are 15 competitors to keep your eye on in London. -- By Carla Thorpe
Leryn Franco of Paraguay competes in the women's javelin throw final during Day 13 of the XVI Pan American Games at Telmex Athletics Stadium on October 27, 2011 in Guadalajara, Mexico. Teddy Riner (R) of France and Anis Chedli of Tunisia compete in the men's 100 Kg Judo final event of the XVI Mediterranean Games at Febo Complex on July 5, 2009 in Pescara, Italy Neymar of Brazil in action during the International friendly match between Brazil and Ghana at Craven Cottage on September 5, 2011 in London, England. Robert Harting of Germany competes in the Mens Discus Qualifying during day five of the 20th European Athletics Championships at the Olympic Stadium on July 31, 2010 in Barcelona, Spain. Luciana Aymar of Argentina in action during the Women's Hockey Champions Trophy fourth round match between Argentina and Australia at the Canberra Hockey Centre on December 1, 2005 in Canberra, Australia. Feng Tianwei of Singapore plays a backhand during her match against Seok Ha Jung of South Korea during the LIEBHERR table tennis team world cup 2012 championship division women's semi final match between South Korea and Singapore at Westfalenhalle Dortmund on March 31, 2012 in Dortmund, Germany. Rafael Nadal of Spain in action during his match against Radek Stepanek of the Czech Republic during day 7 of the Sony Ericsson Open at Crandon Park Tennis Center on March 25, 2012 in Key Biscayne, Florida. Wu Minxia of China competes in the Women's 3m Springboard Final during day two of the FINA/Midea Diving World Series 2012 Beijing Station at the National aquatics center on March 24, 2012 in Beijing, China. Louis Smith of Great Britain competes in the Pommel Horse apparatus final during day nine of the Artistic Gymnastics World Championships Tokyo 2011 at Tokyo Metropolitan Gymnasium on October 15, 2011 in Tokyo, Japan. Priscilla Lopes-Schliep of Canada competes in the Womens 60m Hurdles Final during Day 2 of the IAAF World Indoor Championships at the Aspire Dome on March 13, 2010 in Doha, Qatar. Alicia Sacramone Lee Chong Wei of Malaysia in action in his mens match against Hans-Kristian Vittinghus of Denmark during the Yonex All England Badminton Open Championship at the NIA on March 8, 2012 in Birmingham, England.