Jamaican sprint star Usain Bolt and middle-distance king Mo Farah headline a stellar track and field line-up at the Commonwealth Games which start in Glasgow on Wednesday.
Bolt, world record holder in both the 100 and 200m as well as double Olympic and world champion, has consistently said since his victories at the Moscow worlds in 2013 that the Commonwealths were his goal, depending on coach Glen Mills' wishes.