United States' Ashton Eaton clears the bar in the pole-vault of the heptathlon during the Athletics World Indoor Championships in Sopot, Poland, Saturday, March 8, 2014. (AP Photo/Petr David Josek)
United States' Ashton Eaton rests on a chair in the heptathlon during the Athletics World Indoor Championships in Sopot, Poland, Saturday, March 8, 2014. (AP Photo/Petr David Josek)
United States' Ashton Eaton clears a hurdle in the 60m hurdles of the men's heptathlon during the Athletics Indoor World Championships in Sopot, Poland, Saturday, March 8, 2014. (AP Photo/Matt Dunham)
Jamaica's Veronica Campbell-Brown prepares a women's 60m heat - her first race after she returned after her doping ban - during the Athletics Indoor World Championships in Sopot, Poland, Saturday, March 8, 2014. (AP Photo/Matt Dunham)