High Quality Content by WIKIPEDIA articles! The 2011 Cincinnati Open (also known as the Western and Southern Open for sponsorship reasons) was a tennis tournament played on outdoor hard courts at the Lindner Family Tennis Center in Mason, Ohio, near Cincinnati, United States. The tournament was a joint men`s and women`s event, with six new courts being built for the tournament. The competition took place between the from August 15 through August 21, 2011. The 110th edition of the Cincinnati Open, it was a Masters 1000 event on the 2011 ATP World Tour, and part of the Premier Series of the 2011 WTA Tour.