Janko Tipsarević is a Serbian tennis coach and former professional player. In tennis, his career-high singles ranking is world No. 8, achieved on 2 April 2012. In his career, he won 4 ATP World Tour titles, one ATP doubles title, three Futures, and 15 Challenger titles. Tipsarević also won the 2001 Australian Open junior title. He holds notable victories over former world No. 1 players Carlos Moyá, Marat Safin, Lleyton Hewitt, Juan Carlos Ferrero, Andy Roddick, his compatriot Novak Djokovic, and Andy Murray. His best results at a Grand Slam tournament were reaching the quarterfinals at the US Open in 2011 and 2012.