There is no "2012 open tennis tournament".
A Grand Slam is a tournament of the ranked players and it spans across different continents. There are 4 Grand Slams in a year. The ATP is the Association of Tennis Professionals.
U.s. Open
us open
US Open
Quarterfinalists in the Us Open Grand Slam tournament win about $237,500.
The tennis Grand Slam is a annual tournament. There three tournaments within the Grand Slam. The US Open, the Wimbledon, and the Australian Open.
This Grand Slam is played in New York state.
The four major tennis tournaments; the US Open, the Open Championships(wimbledon), Roland Garros (French Open), and the Australian Open are known as the Grand Slam of tennis. Hitting a grand slam in baseball scores four runs and is the greatest accomplishment a baseball player can achieve during one at bat. Likewise, winning the Grand Slam of tennis involves winning four tournaments and is considered the greatest accomplishment in tennis. Because "tournament which makes up part of the Grand Slam of tennis" is so long it is usually shortened to "Slam".
Bjorn Borg -2
it is managed by International Tennis Federation(ITF), the biggest tennis governing body headquartered at initially at Paris but moved to London duing world war II
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