The Memphis Open was a professional tennis tournament that ran from 1975 to 2017. From 1977 onwards, the event was held at the Racquet Club of Memphis in Memphis, Tennessee. The Memphis Open was the only ATP event in the United States which was played on indoor hard courts; it usually took place in February. For part of its history it was a combined men's and women's tournament, but for its final four years it was solely a men's tournament.

The U.S. National Indoor Championships was a tennis tournament that was last held at the Racquet Club of Memphis in Memphis, Tennessee, United States. Also known as the U.S. International Indoor Championships. The event was played on indoor hard courts and usually took place in February. For much of its more than 100-year history it was a combined men's and women's tournament but in 2014, its final year, only a men's tournament was held. The event was previously known under various sponsored names including the Memphis Open, the Regions Morgan Keegan Championships, the Kroger St. Jude Championship, and the Volvo Championships. It was called throughout most of its history the National Indoor Championships.