Players Association (IPTPA) was the forerunner of what is now the Association of Tennis Professionals (ATP), of which Davies was to become executive director in 1982. In 1961 Davies published two books: one a teaching book, and the other a biography called Tennis Rebel (Stanley Paul, London). Davies retired in 1967, one year before Wimbledon finally allowed professionals to play. However, he did come out of retirement to play in the first Open at Wimbledon. He had missed 28 Grand Slam events during the ban. Grand Slam finals Doubles (1 runner-up) Entrepreneurial career WCT In 1967 Lamar Hunt co-founded World Championship Tennis (WCT) with his nephew, Al G. Hill Jr. and, in 1968, they hired Davies as the executive director with the task of building WCT into a major force. They had eight contracted players and promoted them as The Handsome Eight: Dennis Ralston, Butch Buchholz, Pierre Barthes, John Newcombe, Tony Roche, Nikki Pilic, Roger Taylor and Cliff Drysdale. WCT guaranteed each a certain amount of money for a certain number of weeks of play each year. After a couple of years, WCT bought the contracts of the other professional players at the time, including Rod Laver, Ken Rosewall, Roy Emerson, Andrés Gimeno and signed former amateurs Arthur Ashe and Stan Smith to professional contracts. In 1970, Davies put together the plans for the first million-dollar tour: 20 tournaments throughout the world, played in 20 cities, 32 players under contract, each receiving $50,000. The eight with the best record would qualify for the WCT finals in Dallas. Davies ran the Dallas-based WCT as executive director for 13 years. During his time with WCT Davies was responsible for the following innovations and rule changes in the game: first professional circuit to incorporate the tie-breaker first to insist on coloured clothing on the players introduction of a coloured tennis ball (first orange, then yellow) in 1972 Davies created the 30 seconds between points and the 90 seconds between games first to place chairs on the court for the players during change-overs first to have a player representative and a trainer travel with the players to each tournament overrule by the umpire and experimented with electronic line calling in 1972 first to complete a television deal with a major network (NBC) for its World Championship of Tennis Series, culminating in the Dallas finals first to syndicate tournaments in the U.S. first to sign