 Luxembourgers have had little success in professional tennis.Gilles Müller, considered the best men's player the country has ever produced, reached the quarter-finals of the 2008 U.S. Open and the 2017 Wimbledon Championships, has two ATP Titles and has a career high ranking of 21st.Women's players that have reached the top fifty include Anne Kremer (18th) and Claudine Schaul (41st).