Kim Clijsters began preparation for the defense of her Australian Open singles title with a 6-1, 6-4 win over Romania's Simona Halep in the first round of the Brisbane International Sunday. Clijsters beat China's Li Na in the final at last year's opening Grand Slam at Melbourne Park. This year's Australian Open begins Jan. 16. “I felt that I was playing aggressively and moving well, so I was pretty satisfied,” Clijsters said of Sunday's win. She also said the abdominal problem that forced her to retire from a number of tournaments, including the US Open, in 2011 had left no lingering problems with her serving action. “I felt confident with my serve. I think that's something that, in the past, wasn't always the case,” she said. In another match Sunday, 2010 French Open champion Francesca Schiavone of Italy advanced to the second round when her opponent, Ksenia Pervak of Russia, retired with a headache at 4-4 in the opening set. Top-seeded Samantha Stosur plays her first-round match Monday, as will Serena Williams, who Stosur defeated in last year's US Open final. In men's play Sunday, James Duckworth of Australia beat Nicolas Mahut of France 6-4, 6-4. Top-seeded Andy Murray plays his first-round singles match Tuesday. Murray combined with former Australian Open finalist Marcos Baghdatis to beat Santiago Giraldo of Colombia and Kei Nishikori of Japan 6-2, 6-2 in a first-round doubles match Sunday at Pat Rafter Arena. The 24-year-old Murray spent last season ranked in the top four but still hasn't won a Grand Slam singles title. Murray reached the Australian Open final and the semifinals of the other three Grand Slams last season. Spain beats Australia In Perth, Fernando Verdasco and Anabel Medina Garrigues beat Lleyton Hewitt and Jarmila Gajdosova in a mixed doubles third set tiebreaker to give Spain a 2-1 victory over Australia in their Hopman Cup encounter Sunday at the Burswood Dome. According to Hopman Cup rules, the mixed doubles is decided by a tiebreaker if sides win a set apiece. The first pair to reach 10 points with at least a two-point advantage wins the match. Earlier, Gajdosova beat Medina Garrigues 6-3, 3-6, 6-3 to give Australia a 1-0 lead on the indoor hard courts. Verdasco then beat Hewitt 6-3, 3-6, 7-5, breaking Hewitt's serve in the final game, to leave the countries level at 1-1.