The 1973 Masters (also known as the 1973 Commercial Union Assurance Masters for sponsorship reasons)[2] was a tennis tournament played on indoor carpet courts at Hynes Auditorium in Boston, Massachusetts in the United States.

[3] Mateflex is a soft plastic, interlocking tile court, with the slower ball speed of clay but the low maintenance of a hard surface.

Ilie Năstase won his third consecutive Masters title and earned $15,000 prize money.

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