Serena Williams' comeback to tennis has been confirmed, with the 44-year-old playing doubles at the HSBC Championships at Queen's Club next week.The 23-time grand slam singles champion's imminent return has been touted since it was revealed in December she had re-entered the anti-doping programme - a prerequisite to play on the tour again.

Serena Williams' comeback to tennis has been confirmed, with the 44-year-old playing doubles at the HSBC Championships at Queen's Club next week.The 23-time grand slam singles champion's imminent return has been touted since it was revealed in December she had re-entered the anti-doping programme - a prerequisite to play on the tour again.