U.S. National Indoor Championships

The men's singles was the only event played and was won by Leo Ware who defeated Holcombe Ward in the final in straight sets.

In 1900 a men's doubles event was added and the tournament moved to the Seventh Regiment Armory in Manhattan, New York, where it was played on a wood court until 1963 with the exception of 1941 (Coliseum in Oklahoma City) and from 1942 until 1945 when no tournament was held due to World War II.

When the Seventh Regiment Armory was closed for renovations a new venue for the tournament had to be selected by the USLTA.

[2] In 1964 the tournament moved to Salisbury, Maryland, and was organized by Jimmy Connors' manager Bill Riordan.

[4][5] The men's tournament was part of the Grand Prix tennis circuit between 1976 and 1989 before becoming an ATP Tour event.