Ochoa is stamping her authority on women's golf

World number one Lorena Ochoa stormed to victory in her defence of the Safeway International at Superstition Mountain in Phoenix, Arizona.

The Mexican shot a six-under-par 66 to win by seven shots on 22 under - four shots better than her winning total last year.

South Korea's Jee Young Lee took second place with Minea Blomqvist in third.

England's Laura Davies and Sweden's Annika Sorenstam were 11 shots back in a tie for ninth.

It was a 19th LPGA title for 26-year-old Ochoa and a second this year to go with the HSBC Women's Champions crown she collected in Singapore at the start of the month.

Kent's Karen Stupples, who had been in contention from round one, closed with a 71 for nine under and a tie for 15th.