Abu Dhabi: Stan Wawrinka and Milos Raonic have withdrawn from the 10th Edition of the Mubadala World Tennis Championship (MWTC) and will be replaced by South African Kevin Anderson and Russian Andrey Rublev respectively.

The MWTC will run from December 28 to 30 at the International Tennis Centre at Zayed Sports City in Abu Dhabi. Wawrinka and Raonic confirmed that they are not yet ready to compete following their respective time away from the game.

“Unfortunately, I won’t be able to play in Abu Dhabi this year as I’m not ready yet to compete at this level. Together with my team, I’m working hard and we will do everything to be ready in time for the Australian Open. I’m sad that I won’t be able to play in front of the great fans at the Mubadala World Tennis Championship but I need to be patient and give my body the time it needs. I wish everyone a great event and hope to be back in Abu Dhabi in 2018,” said Wawrinka.

Replacing Wawrinka will be recent US Open finalist Anderson, who will be in action on day one taking on world No. 10 Pablo Carreno Busta in a repeat of their recent US Open semi-final, with the winner playing defending champion Rafael Nadal on day two for a place in the final.

Raonic will be replaced by Russian Rublev, who will play world No. 5 Dominic Thiem with the winner playing Novak Djokovic in the semi-final on day two of the Championship.

Earlier this year, Anderson reached his first Grand Slam final at the US Open where he lost to Nadal. The 6-foot-8 big-serving right-hander came back from a set down to beat fellow MWTC participant Busta to secure a place in the final. In the process, the 31-year-old became the first South African to reach the US Open final, as well as becoming the tallest Grand Slam finalist, both in the Open era.

“I’m looking forward to playing in Abu Dhabi and getting ready for the new season and the year’s first Grand Slam. The competition is going to be intense and I’m looking to pick up on where I left off last year,” Anderson said.

Nicknamed Rubi, Rublev has had an impressive season recording his first top 10 victory when he beat eventual ATP World Tour Final Champion Grigor Dimitrov in the second round of this year’s US Open where he reached the quarter-finals. The Moscow native has improved his year-end ranking in four straight seasons from 2014-17 and advanced to final of the inaugural Next Gen ATP Finals, as well as capturing his first ATP singles title at the Croatian Open.

“I’m happy to be invited to an event of this level and it is a great honour for me. I will do my best to show my top game and I am looking forward to meeting the local audience,” said the 20-year-old.