Catriona Matthew won the Scandinavian TPC on Sunday, shooting a four-under 68 to beat Laura Diaz and Sophie Gustafson by three shots.
Matthew finished with a nine-under 279 total for her fifth tour victory.
"I'm absolutely delighted," Matthew said. "I struggled a bit at the turn but the birdies on 12 and 13 helped to settle me down."
Matthew began with birdies on the first two holes, then added others on the fourth and fifth holes to take a five shot lead.
"It's fantastic. I haven't won in a couple of years and there's a great field here this week so I'm just thankful to have won," said Matthew, who dropped shots on the sixth and 10th holes, but clawed back with two birdies on the back nine.
Gustafson (68) and Diaz (68) tied for second place at six-under, and Maria Hjorth (70) tied for fourth at four-under with LPGA Championship winner Suzann Pettersen (71).
Defending champion Annika Sorenstam closed with a 68 for her best round in the tournament and moved from 21st to ninth.
After playing 43 straight holes without a birdie, the Swede made six birdies in the final round and bogeyed two.
"It was different today," Sorenstam said. "I hit the fairways, and if you do that you also hit the greens, and you get birdie chances. I'm happy with my score today, but I have to work harder."
A Hall of Famer who has won 10 majors and 84 tournaments worldwide, Sorenstam is heading to the most disappointing season of her career. She had a second place finish in March, then she didn't make the top 10 again until July. She sustained a back injury in April and was sidelined for two months.