Roger Federer will return to world No. 1 on Friday with a win over Dutch ace Robin Haase after taking Philipp Kohlschreiber out of the Rotterdam Open.
The Swiss will overtake Rafael Nadal at the top of the ATP leaderboard should he advance to the semi-finals and in the process surpass Andre Agassi as the oldest world No. 1 in history.
Agassi’s final spell at the top of the rankings was aged 33, but Federer, 36, is set to smash that record with a win over the unfancied home favourite.