| 1973 Commercial Union Assurance Masters | |
|---|---|
| Date | December 4–8 |
| Edition | 4th |
| Category | Masters Grand Prix |
| Draw | 8S |
| Prize money | $50,000 |
| Surface | Carpet / indoor |
| Location | Boston, U.S. |
| Venue | Hynes Auditorium |
| Champions | |
| Singles | |
 Ilie Năstase[1] | |
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.[4] It was the fourth edition of the Masters Grand Prix and was held from December 4 through December 8, 1973. Ilie Năstase won his third consecutive Masters title and earned $15,000 prize money.[5]
- ^ "1973 Masters Boston – Draw". Association of Tennis Professionals (ATP).
- ^ Collins, Bud (October 2010). "Year-End Championships". The Bud Collins History of Tennis: An Authoritative Encyclopedia and Record Book. New York: New Chapter Press. p. 746. ISBN 978-0-942257-70-0.
- ^ "That Rumanian black magic". Sports Illustrated. December 17, 1973. Retrieved October 27, 2019.
- ^ "Tennis courts getting new Mateflex surface". The Mashall News Messenger. October 22, 1991. p. 11.
- ^ John Barrett, ed. (1974). World of Tennis '74 : a BP and Commercial Union yearbook. London: Queen Anne Press. pp. 159–162. ISBN 9780362001686.