Russian Daniil Medvedev has replaced Novak Djokovic at the top of the world rankings, two weeks before a Wimbledon he is not allowed to play in.
Wimbledon has been stripped of its ranking points over its decision to ban Russian and Belarusian players over the Russian invasion of Ukraine.
However, that decision means that Medvedev, 26, is likely to increase his lead over Djokovic at the end of the tournament, as the Serb is defending the title and thus has more ranking points to lose.
Djokovic has dropped to number three in the world, with the injured Alexander Zverev in second place.
It is the first time since November 2003 that neither Djokovic, Rafael Nadal, Roger Federer or Andy Murray have been in the top two of the rankings.
Medvedev became the first player other than Djokovic, Nadal, Federer or Murray to top the men’s rankings since American Andy Roddick 18 years ago, when he briefly replaced Djokovic as number one in February.
Wimbledon banned Russian and Belarusian players from participating this year due to the Russian invasion of Ukraine – causing the governing bodies of the men’s and women’s games, the ATP and WTA, to take ranking points from the Slam.
Six-time Wimbledon champion Serb Djokovic will lose the 2000 ranking points he gained when he won the men’s title at SW19 last year.
Medvedev and Germany’s Zverev can only lose 180 points after coming out in the fourth round last year.
The Russian was defeated in two sets by Marin Cilic in the fourth round of the French Open and suffered a shocking defeat in the final of the Libema Open in the Netherlands on Sunday against the Dutch wildcard Tim van Rijthoven, the number 205 in the world.
Van Rijthoven, 24, stunned Medvedev 6-4 6-1 in 65 minutes to capture a first ATP title in front of his home crowd on his second appearance in a tour-level main draw. Prior to the tournament, he had not yet won a tour level competition.
Zverev, a semifinalist at Roland Garros, will probably miss a few weeks later undergo surgery on his torn ankle ligaments last week.
Meanwhile, world number four and French Open champion Rafael Nadal is recovering from treatment for a chronic foot condition.
The number two of the French Open, Casper Ruud, 23, replaces Stefanos Tsitsipas in the top five for the first time.