sentences:  Pearson was in good form during the 2009 European season, winning five out of seven races and breaking the Australian and Oceanian record in the 100 m hurdles at the Herculis meeting in July, with a time of 12.50 seconds; 0.03 faster than the area record she had set on the same track a year earlier.However, she was hampered by back spasms in the lead up to the World Championships in Berlin, and was only able to finish fifth in the 100 m hurdles final.At the 2010 Commonwealth Games in Delhi, India, Pearson competed in the 100 m sprint in addition to the 100 m hurdles.