Men's tennis will have a new name inside its top two for the first time in 16 years on Monday, with Daniil Medvedev breaking the dominance of the big three.
Monday 8 was already going to be a significant day in rankings history, with Novak Djokovic surpassing Roger Federer for the most weeks spent at world number one.
Additionally, Roger Federer will drop out of the world's top five for the first time in five years on the day, ironically, he makes his return to tennis after a year out injured.
The day will now take on even more significance due to Daniil Medvedev usurping Rafael Nadal from the world's top two.
The Russian had a chance to achieve it this week regardless had he reached the Rotterdam final, although he was defeated in the first round.
However, with Nadal not defending his Acapulco title due to a back injury, under the new temporary COVID ATP rankings rules, he will still drop half of the points he won there last time, which will see him drop below Medvedev's points total.
It will be the first time since July 25 2005 when someone other than Novak Djokovic, Rafael Nadal, Roger Federer, or Andy Murray have been in the world's top two.
The last man to do that was Lleyton Hewitt, back when Nadal, Djokovic, and Murray were still teenagers.
Federer, meanwhile, has not played for over a year, and he has enjoyed an unnaturally high ranking due to the quirks of the emergency COVID rankings rules.
He will be overtaken by Stefanos Tsitsipas in the rankings on Monday, though, leaving him at world number six ahead of his comeback in Doha.
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