Do Cara Black and Marin Čilić share the same nationality?
Marin Čilić Marin Čilić (; born 28 September 1988) is a Croatian professional tennis player. Over the course of his career, Čilić has won 17 ATP singles titles, including the 2014 US Open. His career-high singles ranking is world No. 5, achieved in September 2017. 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. Among other achievements, Čilić was runner-up at the 2017 Wimbledon Championships, and was a semifinalist at the 2015 US Open as defending champion. Čilić is currently the youngest active male player to have won a slam. Čilić has reached at least the quarterfinal in all four grand slam tournaments. He has a very powerful serve and very powerful groundstrokes.
Carolina Marín Carolina María Marín Martín (born 15 June 1993) is a professional badminton player from Spain. She is the Olympic Champion, two time World Champion, three time European Champion and the former World No.1 in BWF rankings for the badminton women's singles. Carolina Marin is currently ranked No. 4 in the World by Badminton World Federation. She became the World Champion in women's singles two times in a row in 2014 and 2015. She won her first Olympics gold medal in women's singles at the 2016 Rio Olympics after defeating P. V. Sindhu of India.