Which was the only one of the four 'Grand Slam' Tennis titles that Bjorn Borg did not win?
Björn Borg final were fellow World No. 1 tennis players John McEnroe and Jimmy Connors. Even though it was then played on grass, a surface where he enjoyed much success, Borg chose to play the Australian Open only once, in 1974, where he lost in the third round. Phil Dent, a contemporary of Borg, has pointed out that skipping Grand Slam tournaments—especially the Australian Open—was not unusual then, before counting Grand Slam titles became the norm. Additionally, another contemporary Arthur Ashe told "Sports Illustrated", "I think Bjorn could have won the U.S. Open. I think he could have won the Grand Slam,
Grand Slam (tennis) For instance, when Rafael Nadal was on the verge of completing a non-calendar year Grand Slam at the 2011 Australian Open, one writer observed, "Most traditionalists insist that the 'Grand Slam' should refer only to winning all four titles in a calendar year, although the constitution of the International Tennis Federation, the sports governing body, spells out that 'players who hold all four of these titles at the same time achieve the Grand Slam'." This was true until later in 2011, when the ITF edited the description to eliminate all confusion. As it now stands, "The Grand Slam titles are