Ashley John Cooper AO (15 September 193622 May 2020) was an Australian tennis player who played between 1953 and 1968. He was ranked as the world's No. 1 amateur player during the years of 1957 and 1958. Cooper won four singles and four doubles titles at Grand Slam tournaments. He won three of the four Grand Slam events in 1958. He turned professional in 1959. Cooper won the Slazenger Professional Championships tournament in 1959. He won the Grand Prix de Europe professional tour of Europe in 1960. Cooper won the European Cup professional tour of Europe in 1962. He retired from tennis play at the end of 1962 due to injury. Playing career Amateur Cooper won his first Grand Slam singles title at the 1957 Australian Championships where he defeated compatriot Neale Fraser in the final in four sets. He was runner-up at Wimbledon in 1957, losing the final to Lew Hoad. He reached the 1957 U.S. Open final where he lost to Mal Anderson. Cooper was ranked amateur world number one in 1957 by Ned Potter, Lance Tingay, Adrian Quist and Yvon Petra. Cooper played his best year in 1958, becoming one of only eleven men to win three of the four Grand Slam events in the same year. He successfully defended his Australian singles title after a straight-sets victory in the final against Malcolm Anderson. In July, he won his first and only Wimbledon title after beating Fraser in the final. The pair were roommates at that year's tournament and ate breakfast together on the morning of their match. He followed up with a first singles title at the U.S. Championships, again defeating Anderson in the final. Additionally, Cooper was a semifinalist at the French Championship, losing to Luis Ayala in five sets after leading by 2 sets to love. The defeat prevented him from achieving the Grand Slam that year. It remained the only Major that Cooper did not win in his career. Cooper was ranked world number one amateur in 1958 by Ned Potter and Lance Tingay. The right-handed Cooper played on the Australian Davis Cup team that won the cup in 1957, and were finalists in 1958. Professional In January 1959, Cooper turned professional after signing a contract with Jack Kramer for a $100,000 guarantee. Cooper won his first professional match against Pancho Gonzales at Perth on grass in the Ampol world series of tournaments,