Athletics pins hope on World Cup fever in post-Usain Bolt and Mo Farah era

• New July event in London hopes to give fans new stars• Adam Gemili: 'We need new heroes and new people to get behind' For the past decade Usain Bolt has almost single-handedly carried casual fans' interest in athletics on his 6ft4in frame, with Mo Farah providing much of the auxiliary work in Britain. But when the track and field season kicks off in Doha on Friday two of its most bankable names will no longer be doing the heavy lifting. Bolt has retired. Farah has quit the track and many i...