Andy Murray will team up with his brother Jamie at the Washington Open, reuniting the pairing that helped Great Britain win the Davis Cup in 2015.
Andy, who had hip surgery in January, made a victorious return to the courts in June, winning the doubles at Queen's with Spain's Feliciano Lopez.
The 32-year-old three-time Grand Slam singles champion was knocked out of the men's doubles early in Eastbourne and at Wimbledon, also reaching the third round at the All England Club with Serena Williams in the mixed doubles.
"They called us and said Andy really wanted to come back to DC and wanted to play doubles with his brother," said Mark Ein, tournament manager, in comments reported by the BBC.
"We're putting a real focus on doubles at the event -- it's a terrific piece of the competition and entertainment value for fans so we were thrilled he wanted to return."