Elite athletes are competing at the IAAF World Athletics Championships being held in Beijing this week. Nearly 2,000 competitors from 207 countries are participating in the International Association of Athletics event — primarily at the same stadium which hosted the 2008 Summer Olympics.

By Lloyd Young

Brazil’s Fernanda Martins competes in the qualifying round of the women’s discus throw event at the IAAF World Championships at the Bird’s Nest National Stadium in Beijing on Aug. 24.

(Antonin Thuillier/AFP/Getty Images)