(CNN) -- Justine Henin continued her winning return to tennis with a straight sets win over Kazakhstan's Sesil Karatantcheva at the WTA tournament in Brisbane on Wednesday. Henin, who put out second seed Nadia Petrova of Russia in her first round match, secured a 6-4 6-3 victory in one hour 17 minutes to reach the quarterfinals. The former world number one is returning to competitive tennis after an 18-month retirement and targeting the opening grand slam of 2010 at the Australian Open. She made a shaky start as she dropped her opening service game, but broke back and took total control with a second break against the determined qualifier in the eighth game.
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Justine Henin continues comeback with straight sets win over Kazakhstan's Sesil Karatantcheva
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Former world number one Henin into quarterfinals of WTA top-tier tournament in Brisbane
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Henin remains on course for final clash against Belgian rival Kim Clijsters
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Men's top seed Andy Roddick also reaches quarterfinals where he will play returning Richard Gasquet
@placeholder showed he is fully recovered from the injuries which ruined his end of season campaign in 2009 with a confident display.