SYDNEY — Olympic 100m hurdles champion Sally Pearson has been ruled out of this year's world championships after shattering her left arm in a “traumatic” fall at the Rome Diamond League meeting earlier this month. The 28-year-old Australian, who won the sprint hurdle world title in 2011 and finished second behind American Brianna Rollins in Moscow two years later, had surgery on the injury in Italy but will require another operation Tuesday. — Reuters
