Analysis of information sources in references of the Wikipedia article "Open Era tennis records – Men's singles" in English language version.
Another significant turning point came in 1968 when the French Internationals became the first Grand Slam tournament to join the "Open" era.
'Yes, "open" tennis has come at last and Bournemouth has been entrusted with the task of a world shaking launching,' said the programme notes for the 1968 Hard Court Championships of Great Britain, which brought an end to the sport's segregation of amateur and professional players.
The left-handed Vilas, who beat four-time Wimbledon champion Bjorn Borg Sunday to break the Swede's 49-match victory streak [...]
Another significant turning point came in 1968 when the French Internationals became the first Grand Slam tournament to join the "Open" era.
The left-handed Vilas, who beat four-time Wimbledon champion Bjorn Borg Sunday to break the Swede's 49-match victory streak [...]
