Scotland's Catriona Matthew, who had been in joint third at the halfway stage, finished  tied 24th after a final round of 73 at  the CN Canadian Open at Priddis Green Golf Club in Calgary. 

The North Berwick 40-year-old, who won the Ricoh Women’s British Open last month, finished on two under par and 13 shots behind the winner, Norway's Suzann Pettersen.

Pettersen claimed her sixth LPGA title with a final round 70 and her 15 under par total was five shots better than the group of five players in joint second place. 

Janice Moodie, the second Scot in the field, finished a stroke behind Matthew after a final round 72 and was just inside the top 30.