The US Open Series links 10 summer tournaments to the US Open, creating a cohesive, six-week summer tennis season for ATP World Tour and Sony Ericsson WTA Tour professional tournaments in North America. There are 10 tournaments (11 events) that make up the Olympus US Open Series, including one combined tournament, Pilot Pen Tennis:
Atlanta Tennis Championships in Atlanta, Georgia
Bank of the West Classic in Stanford, California
Farmers Classic in Los Angeles, California
Mercury Insurance Open in San Diego, CA
Legg Mason Tennis Classic in Washington, DC
Western & Southern Financial Group Women's Open in Cincinnati, Ohio
Rogers Masters in Toronto, Canada
Rogers Cup in Montreal, Canada
Western & Southern Financial Group Masters in Cincinnati, Ohio
Pilot Pen Tennis at Yale on New Haven, Connecticut
US Open in Flushing Meadows, New York