Thomaz Koch is a former tennis player from Brazil, who was a quarterfinalist at the French Open, Wimbledon and the U.S. National Championships. Koch was active from 1961 to 1985 and played close to 900 singles matches, and won 36 career singles titles. He was ranked World No 12 player for 1967. His highest computer ranking which was past his peak period in the ATP singles ranking was No. 24. In addition he also won 5 challenger satellite tour tiles towards the end of his career. He won also two gold medals in the men's tennis competition at the 1967 Pan American Games.

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.