Roger Federer. Pic/AFP

After celebrating his return to the top of the ATP rankings by clinching the Rotterdam Open, 20-time Grand Slam champion Roger Federer has insisted that it was an 'absolutely amazing' week for him. Yesterday, Federer, the oldest man to clinch the world number one spot in tennis, eased past Bulgarian player Grigor Dimitrov 6-2, 6-2 to clinch his 97th title at the Rotterdam Open.