Martina Hingis is to return to competition in the Liverpool International Tennis Tournament in June despite her drugs ban.

Martina Hingis is to return to competition in the Liverpool International Tennis Tournament in June despite her drugs ban.The Swiss announced her retirement from the game in November after she tested positive for cocaine at Wimbledon last summer.Although the 27-year-old denied and challenged the findings, the International Tennis Federation rejected her appeal and she was handed a two-year suspension from October 1, 2007. However, the five-time grand slam winner can appear at the tournament at Calderstones Park from June 10-15 because it is an invitational event.