The list grand slam winners in 2011/ 2012 Australian open / French open 2012 men's title /French open 2012 women's title/Wimbleon 2012 women's title won Serena Williams/men's Roger Federer/U.S Open 2012-Andi Murray/Serena Williams

GRAND SLAMS 2012
TITLE	MEN’S SINGLES	WOMEN’S SINGLES
WIMBLEDON	ROGER FEDERER	SERENA WILLIAMS
AUSTRALIAN OPEN	NOVAK DJOKOVIK	VICTORIA AZARENKA
FRENCH OPEN	RAFAEL NADAL	MARIA SHARAPOVA
US OPEN	ANDI MURRAY	SERENA WILLIAMS

       The four Major tennis tournaments ,the Australian Open, the French Open, Wimbledon, and the US Open, generally called the Slams, are the most important tennis events of the year in terms of world tour ranking points, tradition, prize-money awarded, strength and size of player field, and public attention. The Australian Open and the US Open are played on hard courts, while the French Open is played on clay, and Wimbledon is played on grass. The "Grand Slam" is the winning of all four Major tournaments in a single calendar year; however, it has also been used for many years now to refer to any of the major tournaments.

WIMBLEDON	LONDON	GRASS
AUSTRALIAN OPEN	MELBOURNE	HARD
FRENCH OPEN	ROLAND GARROS ,PARIS	CLAY
US OPEN	NEW YORK	HARD

GRAND SLAMS 2011
TITLE	MEN’S SINGLES	WOMEN’S SINGLES
WIMBLEDON	NOVAK DJOKOVIK	PETRA KVITOVA
AUSTRALIAN OPEN	NOVAK DJOKOVIK	KIM CLIJSTERS
FRENCH OPEN	RAFAEL NADAL	LI NA
US OPEN	NOVAK DJOKOVIK	SAMANTHA STOSUR