Known for her footwork and defensive abilities, Wozniacki won 30 WTA singles titles (including six in both 2010 and 2011, the most in a year by a WTA player from 2008–2011) and two doubles titles. A junior Grand Slam champion, she won the 2006 Wimbledon girls' singles title over Magdaléna Rybáriková, and was voted the WTA Newcomer of the Year in 2008. She won a Grand Slam singles title at the 2018 Australian Open, beating Simona Halep and becoming the first Dane to win a Grand Slam singles title. Previously, she had reached two Grand Slam finals at the US Open, falling to Kim Clijsters in 2009 and to her friend Serena Williams at the 2014 US Open. Wozniacki also won the season-ending WTA Finals in Singapore in 2017, beating Venus Williams, after finishing runner-up to Clijsters at the event in 2010. Her other major career highlights include winning three Premier Mandatory and three Premier 5 titles, reaching four Grand Slam semifinals (the 2011 Australian Open and the 2010, 2011 and 2016 US Opens, three Grand Slam quarterfinals (the 2012 Australian Open and the 2010 and 2017 French Opens), and the quarterfinals at the 2012 London Olympics.