Postpublished at 17:42 British Summer Time 13 August 2014
While we are waiting for the off, let me bring you news of events earlier today.
The big news was that France's Jimmy Vicaut, the only man in the field to have gone sub-10 this season and one of the favourites for the men's 100m final tonight, has pulled out with a thigh injury that brings his season to an end.
Sophie Hitchon of Great Britain also bid farewell to the Championships having failed to qualify for the hammer final.