.:TeNnIs - MaRtInA HiNgIs:.

Tennis: No full return, but Martina Hingis to play World TeamTennis

Martina Hingis, 29, can't help but contemplate another comeback when she sees the success Kim Clijsters and Justine Henin are having after being away.

"There's a spark," Hingis said, but she is ruling out a return to the tour "at this point," primarily because of the travel.

The five-time Grand Slam singles champion and youngest woman to be ranked No. 1 retired for the second time in 2007, when she was given a two-year suspension for testing positive for cocaine. The ban ended Sept. 30, and Hingis has committed to a full season of World TeamTennis, the coed league founded by Billie Jean King that is entering its 35th season.

Hingis has successful peers in Clijsters, who won the '09 U.S. Open, and Henin, who reached the Australian Open final.

"It's great to see them dig deep and come back that well," Hingis said. "I don't know if I could handle it."