Former world number one Martina Hingis has confirmed that she is unlikely to make another comeback to competitive tennis.
Hingis, 29, received a doping ban in 2007 after testing positive for cocaine at Wimbledon.
And, despite making a comeback in 2006 following a three-year retirement, Hingis revealed that another change of heart is unlikely.
"Many people ask when I will play again. But it would be too much of a burden to make it back to the top again," Hingis told the Tages-Anzeiger newspaper.
"I do not think I still have the will and the strength to produce that kind of a performance again," she added.
Hingis won five Grand Slams and 43 WTA singles titles during a career stretching back to 1994.
However, she has not ruled competing in any upcoming exhibition events.
"But playing a few more exhibitions, that would appeal to me," she said, also suggesting she would like to help young players.