Switzerland's Roger Federer with the Rotterdam Open trophy. Pic/AFP

Roger Federer celebrated his impending return to the top of the world rankings by winning the Rotterdam Open yesterday, his 97th title. The Swiss, 36, the oldest ATP No. 1 in history, thrashed Bulgarian Grigor Dimitrov 6-2, 6-2 in a one-sided final. In the Open era, only American Jimmy Connors has won more titles than Federer, with 109. Federer will retake the No. 1 ranking he last held in October 2012 when the official rankings are published today.