Marin Čilić (Croatian pronunciation: [ˌmâriːn ˈt͡ʃǐːlit͜ɕ]; born 28 September 1988) is a Croatian professional tennis player whose biggest success to date is having won the 2014 US Open. So far, Čilić has won 14 ATP singles titles. His career-high singles ranking is World No. 8, achieved in October 2014. Čilić first came to international prominence by defeating then World No. 2 Andy Murray in the fourth round of the 2009 US Open. He followed this by reaching the semifinals of the 2010 Australian Open. Čilić was also a quarterfinalist at the 2014 and 2015 Wimbledon Championships.