Usain Bolt: What is it like to manage sport's biggest star?

By Jessica CreightonBBC Sport

Ever since Usain Bolt was a teenager, he has had Ricky Simms by his side. As Bolt's agent, Simms organises his races, secures his sponsorship deals - and even buys his dinner jackets.

When they first met, more than a decade ago, Simms and Bolt were both well-known in athletics circles.

Irishman Simms was the young, ambitious sports agent who had taken on one of the premier sports management companies in the world while 15-year-old Bolt was, according to Simms, "the talk of the world of athletics" after racing to the 200m World Junior Championship title in Jamaica in 2002 against men four years his senior.