The 1973 U.S. Pro Tennis Championships was a men's tennis tournament played on outdoor hard court at the Longwood Cricket Club in Chestnut Hill, Massachusetts in the United States. The event was classified as a Group B category tournament and was part of the 1973 Grand Prix circuit. It was the 46th edition of the tournament and was held from July 16 through July 23, 1973. Unseeded Jimmy Connors won the singles title and the accompanying $12,000 first prize money.[1] Due to a rain-delay the final was played on Monday, July 24.[2]
See main article: 1973 U.S. Pro Tennis Championships – Singles. 
Jimmy Connors defeated Arthur Ashe 6–3, 4–6, 6–4, 3–6, 6–2
Stan Smith / Erik van Dillen defeated 
Ismail El Shafei / Marty Riessen[3] 4–6, 6–4, 7–5