Zurich's Letzigrund Stadium (© Michelle Sammet)
Welcome to our comprehensive lead-in coverage to the Weltklasse Zurich, the first final of the IAAF Diamond League's 10th season.
This page will be updated regularly throughout the day today and right up until the main competition programme begins tomorrow, incorporating news gathered from our correspondents on the ground in Zurich and from IAAF, local organisers' and athletes' social media channels. In short, a one-stop shop for all things Weltklasse.
To get up to speed, check out our main in-depth meeting preview.
Updates by Bob Ramsak.
