Australia's Sally Pearson completed one of the great sporting comebacks when she overcame two years of injury agony to win the world 100 metres hurdles title at the age of 30.
Christian Coleman showed again he is the man to beat in the 100 metres as he cruised to victory at the US Nationals and World Championship trials with another sub-10 second run on Friday. World silver medallist Coleman, who holds the year's fastest time of 9.81 seconds, won the final in 9.99 seconds after clocking 9.96 in the semi-finals.
