The recent success of Serbian tennis players has led to an immense growth in the popularity of tennis in the country. Novak Djokovic has won a joint-record 20 Grand Slam singles titles and has held the No. 1 spot in the ATP rankings for a record total of 346 weeks. He became the eighth player in history to achieve the Career Grand Slam, the third man to hold all four major titles at once, the first ever to do so on three different surfaces, and the first in the Open Era to achieve a double Career Grand Slam. Ana Ivanovic (champion of 2008 French Open) and Jelena Janković were both ranked No. 1 in the WTA Rankings. There were two No. 1 ranked-tennis double players as well: Nenad Zimonjić (three-time men's double and four-time mixed double Grand Slam champion) and Slobodan Živojinović. The Serbia men's tennis national team won the 2010 Davis Cup and 2020 ATP Cup, while Serbia women's tennis national team reached the final at 2012 Fed Cup.