World 110m hurdles champion David Oliver will compete at the Stockholm Bauhaus Athletics meeting on 30 July where he hopes to notch up his second victory at the IAAF Diamond League meeting.

The USA will be represented by 49 athletes including three world youth leaders at the IAAF World Youth Championships, Cali 2015 later this month.

Last year, Sydney McLaughlin clocked 55.63 in the 400m hurdles at the US Junior Championships but at 14 years old was too young to compete at the IAAF World Junior Championships.

Host nation Colombia will field 39 athletes at the IAAF World Youth Championships, Cali 2015, its largest ever contingent for the global under-18 competition.

The Ethiopian town of Bekoji has produced countless champions but grassroots athletics has been sorely underdeveloped until Running Across Borders initiated a project in 2008 to support local coaches and runners.

A handful of world champions and Diamond Race winners will head to the Herculis meeting at the Stade Louis II on 17 July to compete at the IAAF Diamond League meeting in Monaco.