On June 7, 2009 (May 15, 2009 in the lunar calendar), Roger Federer tied Sampras's Grand Slam record. Photo: Roger Federer On June 7, 2009, Swiss king Roger Federer won the French Open, achieving a Grand Slam and tying Sampras 'Grand Slam record. Roger Federer (born August 8, 1981) is a Swiss male professional tennis player (converted professional in 1998). It holds the record of No. 1 in the singles world ranking in the history of the ATP rankings and has the longest consecutive weeks (237 weeks, February 2, 2004-August 17, 2008). It currently has won 17 Grand Slam singles championships and has many titles such as "Swiss Express" and "Cow", and is considered one of the greatest athletes in history. In the early morning of July 7, 2014, Swiss King Federer announced on social platforms that his wife Mirka had successfully given birth to a pair of twin brothers. Federer said that the twin brothers 'names were Leo and Lenny respectively. Previously, the Swiss King already had twin daughters. Won the Shanghai Masters championship for the first time on October 12, 2014. On February 28, 2015,"Swiss King" Federer won the Dubai Open men's singles championship trophy for the seventh time.