By a Staff Reporter: Rafael Nadal, the world's first male tennis player. Who has won 21 Grand Slams. But he does not want to end here. He wants to increase the number of Grand Slam wins. "I don't know how many Grand Slams I will win. If a few days ago someone said I would play tennis again, I probably wouldn't believe it. But now I am thinking that it will be not bad if I won more grand slams than rest of two players." said Nadal.