Sven Lennart Bergelin (10 June 1925 – 4 November 2008) was a Swedish tennis player and coach. As a player, for AIK, Bergelin won nine Swedish championship singles titles between 1945 and 1955, and the French Open doubles title in 1948. Bergelin is best known for his work with Björn Borg, whom he trained between 1971 and 1983, helping him to win 11 Grand Slam tournaments. Bergelin also captained Sweden to its first Davis Cup title.
Tennis career
During a ten-year period, between 1946 and 1955, Bergelin was ranked among the top 10 amateur players in the world, reaching World No. 9 in John Olliff's 1948 amateur rankings.