Mark English and Paul Robinson start a new era for Irish middle-distance running this morning in the heats of the 800m on the opening day of the World Track and Field Championships in Moscow.

Usain Bolt has urged the world to bask in his glory after becoming the first man to win the Olympic sprint double twice in succession on an historic night in London.

Kenya’s David Rudisha last night lit up the Olympic Games with a sensational victory in the 800m, breaking his own world record in the process. Rudisha made the most of ideal conditions, storming through the first lap in 49.28 seconds and powering to the gold medal in one 1:40.91.

Kenya’s David Rudisha has won gold in the men’s 800 metres in a new world record time of 1:40.91.