Andrea Petkovic is a German professional tennis player of Serbian and Bosniak origin. Born in Bosnia and Herzegovina to a Serbian father and Bosniak mother, she moved to Germany at six months old. Petkovic turned professional in 2006 and reached her career-high singles ranking of world number 9 in October 2011 after reaching the quarterfinals of that year's Australian Open, French Open and US Open. She suffered three separate injuries in 2012: a back injury in January, an ankle injury in August and a knee injury in December that kept her out for a combined nine months and almost saw her fall out of the top 200. She has won two WTA titles, nine ITF singles titles and three ITF doubles titles. Petkovic became the German national champion in 2007 and 2009. She is coached by Petar Popović and her father Zoran.