Rafael Nadal pulled out of the Paris Masters on Wednesday guaranteeing Novak Djokovicís return to the world number one spot.
Announcing his withdrawal at a hastily arranged press conference Nadal said: ďMy abdominal muscles havenít felt good for the past few days, especially on serve, doctors recommended that I didnít play.Ē
Djokovic arrived in Paris knowing that he would regain the top spot he relinquished two years ago if he bettered the Spaniardís performance at the indoor event he has won four times.
The Wimbledon and US Open champion becomes the first player to start the season outside the top 20 and end up top of the ATP rankings since Marat Safin in 2000.
The 14-time Grand Slam champion had begun his pursuit of the top spot in encouraging fashion with a 7-5, 6-1 defeat of Joao Sousa on Tuesday, his 19th consecutive win.
For Nadal it means delaying his long awaited comeback from injury which has kept him sidelined since the US Open.
Nadal was forced to withdraw from his US Open semi-final against Juan Martin del Potro in early September with a knee injury.
The problem also sidelined him for Spainís Davis Cup semi-final against France, and also from tournaments in Beijing and Shanghai.
ďItís been a difficult year for me in terms of injuries, and so Iíd prefer to avoid doing anything drastic,Ē he told the media minutes before his intended match against compatriot Fernando Verdasco who instead faced ó and lost to ó Tunisian lucky loser Malek Jaziri.
ďIt wouldnít have been good for me nor anyone to return to the court knowing that I wouldnít be able to play my best.
During his enforced time out Nadal joined in the clean-up operation after flash floods killed 12 people on the Spanish holiday island of Majorca where he lives.
After Paris the ATP tourís eight top-ranked players congregate in London from November 11 for the seasonís Finals.
The 32-year-old Nadal has enjoyed a successful year, clinching his 17th Grand Slam title by winning an 11th French Open in June, after triumphs in Monte Carlo, Barcelona and Rome.
But it is Djokovic who will be top dog when the latest ATP rankings appear on Monday, irrespective of his fate in the French capital this week.
Despite the blow the tournament organisers will be relieved to see Roger Federer making his first appearance at the competition since 2015.
The Swiss great starts his quest for his 100th ATP title in the last 16 on Thursday after his Wednesday rival Milos Raonic withdrew through an elbow injury.
World number three Federer will face Italyís Fabio Fognini, ranked 14, who made the next round when Hungaryís Marton Fucsovics withdrew injured.