retirement party last night, the world of athletics has been waiting with bated breath their —— head of the awarding of the gold medal. he was spared the torrent of booze and rancour that were witnessed after the race last night but that victory has exposed some awkward questions for the world of track and field. gold medallist and world champion... for the world of track and field. it was the sight and the sound that athletics had feared. booing. athletics had feared. the american, twice banned for drug offences, crowned world champion of the sport's blue—riband event. offences, crowned world champion some booed, some applauded, others did not seem to know quite how to react. others did not seem to know instead, the cheers were reserved for the man the crowd had been desperate to see win in his final individual race, but usain bolt had to make do with bronze. individual race, but usain bolt had the sprint superstar denied the perfect end to his glittering career. denied the perfect...