Given the task definition and input, reply with output. In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

Bjo rn Borg ( born June 6 , 1956 ) is a retired professional tennis player from Sweden .
Bjo rn Rune Borg ( -RSB- ; born 6 June 1956 ) is a Swedish former world No. 1 tennis player widely considered to be one of the greatest players in the history of the sport .