The US Open is the 12th straight Grand Slam without an American man in the quarter finals, and the country has not had a men's Grand Slam singles champion in 11 years.

To encourage the next generation of tennis professionals, the United States Tennis Association is working to increase co-operation among training facilities.

Al Jazeera's Kristen Saloomey reports from New York on the efforts to bring back US dominance in the sport.

Source: Al Jazeera