the 1953 world tour, which cemented Kramer's position as the foremost promoter in the professional game. He subsequently signed a succession of amateur players to professional contracts: Tony Trabert and Rex Hartwig in 1955, Ken Rosewall in 1956, Lew Hoad in 1957, Ashley Cooper, Mal Anderson and Mervyn Rose in 1958, Alex Olmedo in 1959, Mike Davies, Andres Gimeno, Robert Haillet, Kurt Nielsen, Barry MacKay and Butch Buchholz in 1960 and Luis Ayala in 1961. Some of these amateurs were pitted against Pancho Gonzales in marathon head-to-head match series for the title of World Professional Champion, which were played primarily in the U.S.. Gonzales won a four-man tour over Segura and Sedgman in 1954, a world series marathon against Trabert in 1956, another long tour against Rosewall in 1957, and against Hoad in 1958. In 1959 and 1960 Kramer arranged four-man tours for the World Championship title. Gonzales frequently complained about the financial arrangements which guaranteed much more money to the new pro recruits than to himself. However, Hoad stated "I never had a problem with Jack Kramer". It was said that Kramer never had a signed contract with Pancho Segura, but operated entirely on a handshake basis with the Ecuadorian star. During the heyday of the Kramer pro tours in the late 1950s, with 11 Hall of Fame tennis players under contract, Kramer's troupe of players were reported to be among the best paid athletes in the world of professional sports, comparable to the best paid baseball players. Laver later stated, “He was a huge figure in tennis. We all needed money and he helped a lot of players get some.” During the years of Kramer's management, the major professional tours gradually transformed from the traditional two-man head-to-head marathon series to a more inclusive arrangement of tournaments linked by points systems which included all of the contract professionals. This transition was necessitated by the growing number of prominent players under contract to Kramer. In 1959, Kramer organized a year-long series of 15 tournaments in Australia, North America, and Europe linked by a points system to create a ranking of all the 12 professionals under contract to his World Tennis Inc. Tours, with a significant bonus money award to the number one finisher. Kramer also arranged a tournament points series for 1960, although both Gonzales and Hoad withdrew and there were no announced final results. In 1964, Kramer advised and