In the 1920s, Karel Koželuh, Albert Burke (son of Thomas Burke), and Roman Najuch were probably the most notable, as well as the best, of these players. The Bristol Cup, held at Beaulieu or at Cannes on the French Riviera and won seven consecutive times by Koželuh, was "the world's only significant pro tennis tournament." Koželuh went on to become one of the best of the touring professionals in the 1930s. He and Burke, however, were not listed among the top players before 1928, as this was the first year when a ranking was published for all the top players, amateur and professional. All top 10 rankings for the years before 1928 were for amateurs only.