 At the 2015 French Open, Čilić lost to David Ferrer in the fourth round in straight sets.At Queen's Club, Čilić was beaten in the second round by Victor Troicki in three sets.Čilić matched his 2014 Wimbledon performance, reaching the quarterfinals again after eliminating Moriya, Berankis, Isner (12–10 in the fifth set), and Kudla.