Rotterdam, February 18: Roger Federer, the oldest man to become the world number 1 in tennis, won the Rotterdam Open here on Sunday, defeating Bulgarian player Grigor Dimitrov.

The twenty-time Grand Slam champion recorded a comfortable two-set victory over second seed Dimitrov. Federer swept aside world number five Dimitrov 6-2-6-2 for his 97th title. He also thanked the spectators for turning up in record numbers and appreciated the support of crowds by terming the atmosphere as "amazing".

The legendary tennis player had entered the tournament as a wildcard and took advantage of Rafael Nadal's absence, who was the world number 1 until Federer won his quarter-final on Friday.

Federer, first became world number one in February 2004, and had not topped the rankings since October 2012. He, infact, slipped to a low of 17th in January 2017.