The Swiss ace is gunning to become the oldest World No 1 eclipsing Andre Agassi's record. Agassi was 33 years old when he became the top ranked player in 2003. Federer only has to reach the semi-finals in the Rotterdam Open this week to guarantee his return to the top of the ATP World Rankings.
The 36-year-old managed to lift his 20th Grand Slam title in Melbourne, winning his sixth Australian Open by defeating Marin Cilic in the finals. The win means that he has stretched his lead over Rafael Nadal to four Grand Slams and is doing his part in establishing himself as the greatest tennis player of all time.
The duo have shared the five Grand Slams between them since the turn of 2017, with Federer winning two Australian Opens and Wimbledon, and Nadal keeping pace by taking the French Open and US Open. The Spaniard has already been deemed the favourite going into the French Open in May, with the 31-year-old looking for his 11th Roland Garros title.