Former world number one Martina Hingis said on Tuesday she may make a second return to the women's tour, this time on the doubles circuit.

The 29-year-old Swiss, who won Wimbledon at the age of 16 and picked up four other Grand Slam singles titles, quit the sport for a second time in 2007 but said she could be tempted into returning if she can find a partner.

"I've been asked here and there, with Lindsay (Davenport)," Hingis told a select group of reporters at the US Open on Tuesday.

"But she wanted to come back too soon and I wasn't ready for that. Then she won (the title) in Stanford," she added.

Hingis said playing recently at the Team Tennis competition in the United States gave her the taste for the game again but she would only return if her heart was completely in it.

"I don't know, I couldn't say right now, it's always maybes," said Hingis, "I need to find a partner first and commit to really wanting to do it. I really enjoyed playing Team Tennis, playing singles and doubles, and the doubles felt really good, so ..."

Hingis quit the sport for the first time in 2003 at the age of 22, suffering from ankle injuries. She returned in late 2006 and finished the following year ranked seventh.

But she quit for a second time in 2007 under a cloud after she tested positive for cocaine at that year's Wimbledon.

Hingis served a two-year ban but maintained her innocence and was welcomed back to Wimbledon this year when she played with Russian Anna Kournikova in the invitational doubles event.