Complex sentence: She finished second in the 20 km race at the 2006 Commonwealth Games behind her sister, Jane, after finishing 4th at the 2002 Commonwealth Games and 36th in the same event at the 2004 Summer Olympics in Athens.
Split into simpler sentences: She finished second in the 20 km race at the 2006 Commonwealth Games. Saville finished 4th in the 20 km race at the 2002 Commonwealth Games and 36th in the same event at the 2004 Summer Olympics in Athens.