#1 Marin Cilic
The most popular Croatian player in tennis right now is undoubtedly Marin Cilic. The big-serving Cilic has been a top-ranked player on the ATP World Tour for around 8 years now. He rose to prominence in 2009 beating Andy Murray in the 4th round at the US Open. The following year, he made the semi-finals of the Australian Open.
His biggest achievement till date came at the 2014 US Open where he beat Kei Nishikori in the final to win his first Grand Slam tournament. His only ATP Masters 1000 triumph came at Cincinnati in 2016.
A resident of Monaco, Cilic achieved a career-high ranking of world number 3 after reaching the Australian Open final earlier this year. He would eventually lose to Roger Federer for the second straight time in Grand Slam finals after having lost to the Swiss player in the Wimbledon final of 2017.
After having helped Croatia win their second Davis Cup title in 2018, Cilic will look to start off the 2019 tennis season on a high note.