Ahead of the start of the 2018 IAAF Diamond League, Alex Seftel and Thomas Byrne talk us through the start-lists and some of the key battles we'll see on Friday 5 May 2018.

In addition, Matthew Quine is joined by Olympic Champion Thomas Röhler where they delve deeper into the German's 'defining moment' of his career to date: the point in which he switched from triple jump to the javelin.