Martin Kaymer, 26, becomes the 14th player to top the ranking in golf and the second youngest player to be number 1.
Tiger Woods was 21 when he first reached no.1 in the world in 1997.
Kaymer has won seven times in the last 2 years, including his first major at the PGA Championship in August, when he holed a clutch putt on the final hole and beat Bubba Watson in a three hole play-off at Whistling Straits.
He ended the 17 week reign of Lee Westwood who only had 3 wins on his world ranking ledger when he became no.1.
“When the rankings say that I’m the no.1, then I’m the best player in the world,” Kaymer said.
