Now one of the mainstays of the BBC’s Wimbledon coverage, John is the winner of 77 singles and 78 doubles titles.

John first made Grand Slam headlines in 1977 while still in his teens by capturing the French Open mixed doubles title and reaching the singles semi-finals at Wimbledon. He asserted his mastery on the professional circuit soon after, with three successive US Open Championships, in 1979, 1980 and 1981.

He ended Bjorn Borg’s five-year reign at Wimbledon with a commanding victory in 1981 that promoted him to the men’s top-ranked player (and the youngest to achieve it), a position he held for four years. He took another Wimbledon title in 1983, but John’s most memorable year was 1984 when he won both Wimbledon and the US Open.

In addition to his singles achievements, John dominated the field as a doubles player. With long-time partner Peter Fleming, John earned four Wimbledon titles and three US Open titles seven years in a row. He represented the United States 12 times in Davis Cup competition, achieving five championship team wins and establishing the record for the most US Davis Cup wins (39 singles and 15 doubles). More recently, John was a doubles winner of the SAP Open in San Jose ATP Tournament in February 2006 at 47 years of age.