Complex sentence: At her first Commonwealth Games in 2002, she went into the competition as the overwhelming favourite with enormous pressure on her, Tatiana's goal was to win gold and set a new Games Record--she achieved both.
Split into simpler sentences: At her first Commonwealth Games in 2002, she went into the competition as the overwhelming favourite with enormous pressure on her. Grigorieva's goal was to win gold and set a new games record--she achieved both.