SHENZHEN:- World number one Simona Halep fired a warning to her Australian Open rivals on Saturday, beating Katerina Siniakova in three sets to win the Shenzhen Open. The Romanian saw off the reigning champion from the Czech Republic 6-1, 2-6, 6-0 in 72 rollercoaster minutes in southern China. The 26-year-old Halep is guaranteed top seeding for the Australian Open, the season's first Grand Slam, which begins in Melbourne on January 15.–AFP