Clay was the Olympic decathlon silver medalist in 2004, the World Outdoor champion in 2005 and the World Indoor heptathlon champion this year.

• 他成功的秘密是刻苦训练，而要拿下十项全能的冠军，并不容易。通常，十项全能冠军被认为是世界上最全面的优秀运动员。