It was the 18th edition of the tournament which was part of the 2011 ATP World Tour and the 2011 WTA Tour.
It was the 38th edition of the event known as the ABN AMRO World Tennis Tournament, and was part of the ATP World Tour 500 series of the 2011 ATP World Tour.
It was the 24th edition of the event known that year as the Atlanta Tennis Championships and was part of the ATP World Tour 250 series of the 2011 ATP World Tour.
It was the 22nd edition of the ATP Studena Croatia Open, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour.
It was the 59th edition of the event known this year as the Barcelona Open Banco Sabadell, and was part of the ATP World Tour 500 series of the 2011 ATP World Tour.
It was the 40th edition of the tournament which was part of the 2011 ATP World Tour.
It was the 37th edition of the event, known as the BNP Paribas Open, and was classified as an ATP World Tour Masters 1000 event on the 2011 ATP World Tour and a Premier Mandatory event on the 2011 WTA Tour.
It was the 19th edition of the BRD Năstase Țiriac Trophy tournament, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour.
It was the 44th edition of the Crédit Agricole Suisse Open Gstaad, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour.
It was the 19th edition of the tournament which was part of the 2011 ATP World Tour.
The 2011 Dubai Tennis Championships (also known as the 2011 Dubai Duty Free Tennis Championships for sponsorship reasons) was a 500 Series event on the 2011 ATP World Tour and a Premier 5 event on the 2011 WTA Tour.
It is the 37th edition of the event known that year as the Erste Bank Open, and part of the ATP World Tour 250 Series of the 2011 ATP World Tour.
It was the 22nd edition of the Estoril Open, and was part of the ATP World Tour 250 series of the 2011 ATP World Tour, and of the International-level tournaments of the 2011 WTA Tour.
It was the 19th edition of the event known that year as the Gerry Weber Open and was part of the ATP World Tour 250 series of the 2011 ATP World Tour.
It was the 43rd edition of the tournament, which was part of the 2011 ATP World Tour.
It was the 68th edition of the event and was classified as an ATP World Tour Masters 1000 event on the 2011 ATP World Tour and a Premier 5 event on the 2011 WTA Tour.
It was the 22nd edition of the Kremlin Cup, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour, and of the Premier Series of the 2011 WTA Tour.
It was the 43rd edition of this event and was part of the ATP World Tour 500 series of the 2011 ATP World Tour.
It was the 14th edition of the Moselle Open, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour.
It was the third edition of the Proton Malaysian Open, and was classified as an ATP World Tour 250 Series of the 2011 ATP World Tour.
It was the 9th edition of the Thailand Open, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour.
The 2011 Rafael Nadal tennis season officially began on January 2 with the start of the 2011 ATP World Tour.
It was the 39th edition of the event known that year as the Rakuten Japan Open Tennis Championships, and was part of the 500 Series of the 2011 ATP World Tour.
The Regions Morgan Keegan Championships was part of the ATP World Tour 500 series on the 2011 ATP World Tour, and the Cellular South Cup was an International-level tournament on the 2011 WTA Tour.
The third edition of the event hosted by current Serbian star Novak Djokovic, it was part of the ATP World Tour 250 series of the 2011 ATP World Tour.
It was the 17th edition of the St. Petersburg Open, and part of the ATP World Tour 250 Series of the 2011 ATP World Tour.
It was the 42nd edition of the event known that year as the Swiss Indoors, and was part of the 500 series of the 2011 ATP World Tour.
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