Stefan Bengt Edberg (Swedish pronunciation: [ˈsteːfan ˈeːd.ˈbɛrj]; born 19 January 1966) is a Swedish former world no. 1 professional tennis player (in both singles and doubles). A major proponent of the serve-and-volley style of tennis, he won six Grand Slam singles titles and three Grand Slam men's doubles titles between 1985 and 1996. He also won the Masters Grand Prix and was a part of the Swedish Davis Cup-winning-team four times. In addition he won four Masters Series titles, four Championship Series titles and the unofficial Olympic tournament 1984, was ranked in the singles top 10 for ten successive years, 9 years in the top 5, and is considered one of the greatest players of his era. Edberg began coaching Roger Federer in January 2014, with this partnership ending in December 2015.

Edberg first came to the tennis world's attention as a junior player. He won all four Grand Slam junior titles in 1983 to become the first (and only) player to achieve the "Junior Grand Slam" in the open era. Later that year as a professional, Edberg won his first career doubles title in Basel. Edberg accidentally caused the death of linesman Dick Wertheim with an errant serve during the 1983 US Open.

In 1984, Edberg won his first top-level singles title in Milan. Edberg also won the tennis tournament at the 1984 Summer Olympics when the sport was an exhibition event and partnered with fellow Swede Anders Järryd to reach the final of the US Open. Edberg also reached the French Open doubles final with Järryd in 1986 and consequently was World No. 1 in doubles in that year.

...
Wikipedia