Usain Bolt Retires: The Jamaican sensation took his final races during the IAAF Championships in London. In the 100m, Bolt placed third to Team USA’s Justin Gatlin and Christian Coleman. Unfortunately, Bolt became injured during the 4x100m race. Yet, fans and competitors honored him on his farewell heats. Bolt won three consecutive Olympic gold medals for the 100m and 200m and two Olympic gold medals for the 4x100m.