Who is the oldest world-s no1 tennis player?

When it comes to tennis the one player who has been consistent for more than a decade isRoger Federer and recently, at the age of 36, Twenty-time Grand Slam champion Roger Federer has become the oldest ever men's singles number one player by defeating Dutchman Robin Haase in the Rotterdam Open quarterfinals. Federer achieved this feat last week and surpassed his contemporary eight-time Grand Slam winner Andre Agassi, who was 33 years old when he became world number one in 2003.

After making such history Roger Federer tweeted, "Apparently I'm the oldest tennis player with a number one ranking. Somebody might have mentioned that to me already but I had a hard time hearing." He is very focused on his game that he did not know that he achieved such remarkable feat. He had become the world number one for the first time in February 2004 when he was 22-year-old.

Reacting to his tweet on becoming the oldest men's singles world number one player a user tweeted, "Somewhere between Federer is world no. 1 and Federer is world no.1, we all grew up," and beyond any doubt his records are unparalleled.