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Last Sunday, after winning his record eighth title just three weeks shy of his 36th birthday, Roger Federer became the oldest male Wimbledon singles champion of the “open era”. The designation “open era”, dating from 1968 onwards, denotes the most profound and marked structural shift in the history of tennis. Given that this year also marks the 50th anniversary of the last amateur Wimbledon Lawn Tennis Championships and the first professional tournament held at the All England Lawn Tennis Club (AELTC), it is worth looking back on Wimbledon’s role in the development of “open tennis”.