Olympic champion Pearson clocks 12.75 in time trial return

Australia's Sally Pearson reacts after winning the gold medal in the women's 100m hurdles final during the London 2012 Olympic Games at the Olympic Stadium August 7, 2012. REUTERS/Stefan Wermuth

SYDNEY (Reuters) - Olympic 100 metres hurdles champion Sally Pearson has clocked an impressive 12.75 seconds in a time trial in her first run-out since shattering her wrist in a fall at a Diamond League meeting last June.

The 29-year-old Australian feared her lower left arm might have to be amputated after the injury in Rome and an old Achilles problem further hampered her preparations for her title defence at the Rio de Janeiro Games.