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.
15 Faces to Watch at the 2012 London Olympics
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