Claim: 2011 New Haven Open at Yale was a tennis tournament played on outdoor hard courts, It was previously known as "Pilot Pen Tennis", and it  was the last event on the 2011 US Open Series before the 2011 US Open.
Evidence: The 2011 New Haven Open at Yale was a tennis tournament played on outdoor hard courts. It was previously known as "Pilot Pen Tennis". It was the last event on the 2011 US Open Series before the 2011 US Open.