Annika Sorenstam fired a superb 66 in the second round to take the outright lead in the Dubai Ladies Masters, her final tournament.

Starting the day four shots off the pace, the former world number one lit up her bogey-free round with a stunning eagle on the par-five third for a 36-hole total of eight-under-par 136, one clear of Australian Nikki Garrett, who also carded a 66.

Russian sensation Maria Verchenova, another player to match the day's best score of 66, was tied for third on six-under 138 along with Veronica Zorzi of Italy and England's overnight leader Johanna Head.

The day, however, belonged to Sorenstam, who once again was followed by a big crowd, in her last event before retiring.

"My goal was to clean up the round that I had on Thursday, and with no bogeys today, I was able to do that. So, I have every reason to feel pleased with my efforts," said Sorenstam.

"I could have done even better. I had a lot of chances and edges really. I hit some good putts that just didn't go in," the 38-year-old, who is hoping for a hat-trick of Dubai titles to end a glittering career on a high note, told reporters.

"I was very focused today and wanted to have a good round. I gave all the energy I had. I need a good night's rest to get ready for the weekend," added Sorenstam, who played brilliantly on the front nine, rolling in one eagle and three birdies.

"I have been very pleased with the front nine. What kick-started the day was that nice eagle on the third hole. I hit a five-iron to about 10 feet and holed the putt."