The United States finished top of the medals table at the World Indoors in Sopot, rounding off the Games in suitably emphatic style by claiming the week’s only world record, in the men’s 4x400m relay.

It will be a tough first day of competition for the five Irish athletes competing at the world indoor championships in Poland today but they all have their personal goals to keep them on track.

Robert Heffernan’s medal chances have been significantly enhanced with the withdrawal of Russian Olympic champion Sergey Kirdyapkin for this morning’s 50km race walk at the World Championships in Moscow and double 50km Olympian Colin Griffin believes the Corkman is on course for a treasured medal.

Yohan Blake and Usain Bolt were again the star attractions at a cold and drizzly Diamond League meeting in Zurich.