It's never easy to be a coach, especially when you have a pair of superstars pupils. In a recent interview with Outlook, Yohan Blake, the world's second-fastest man, expressed his anguish when he was repeatedly denied the opportunity to challenge his Jamaican training partner Usain Bolt. Blake, the youngest ever 100m world champion and Bolt, an eight-time Olympic gold medallist and 100m world record holder, had a common mentor – Glen Mills.