5) US Open 1920 - September 6th
In 1920 Bill Tilden won the first of a total of 7 US Open titles, beating Bill Johnston in the finals by 6-1 1-6 7-5 5-7 6-3 when the tournament was still played at the West Side Tennis Club in Forest Hills N.Y.
To date, Bill is still one of the only three men capable of winning the US Open a total of 7 times. Roger Federer, with 5 titles, follows in the special chart. The data doesn't count the distinction between Open Era and Amateur Tennis.