$ 0 0 Women's world number one Serena Williams eased into the third round of the WTA Dubai Open on Tuesday in her first match back since injuring her back at the Australian Open beating Ekaterina Makarova 7-6 (10/8), 6-0 The 32-year-ols American had a decent tussle in the first set having to save two set points against the world number 24 from Russia before settling into her groove to romp through the second set. Williams, who took a last moment wild card into this tournament, began gingerly and took about an hour before she hit the ball with anything like her usual authority. Once she started to do that, she prevailed more quickly, finishing the match feeling more hopeful that it might have been the right decision to compete again for the first time in four weeks. It was really difficult at first and I was a little bit frustrated," Williams admitted. "I have been practising and this wasn't what I had been practising. "I was making a lot of errors I don't usually make, and my serve was not popping. But I stayed positive, and the second set was better. The body felt all right.