Caroline Wozniacki won her 30th WTA singles title with victory over Latvia’s Anastasija Sevastova in the China Open final in Beijing.The 28-year-old Wozniacki, who won her maiden Grand Slam at the Australian Open at the start of this year, was imperious against the unseeded Sevastova, winning 6-3, 6-3. It is her second China Open crown as she also won it in 2010.