Vasek Pospisil injury sees Stanislas Wawrinka reach Chennai Open final

Top seed Stanislas Wawrinka advanced to the final of the Chennai Open on Saturday after opponent Vasek Pospisil retired from their match with a back injury.

Wawrinka took the first set 6-4 and his passage to the final was confirmed when Pospisil quit with the second level at 5-5.

"It feels good to be in the final, but I feel sorry for my opponent," Wawrinka told reporters.

"He was playing well. I hope he is okay because this is the start of the season and it is important to be ready physically.

"It was a tough match before the final. I did not serve well but I was aggressive from the baseline and moved well on court. I will go into the final tomorrow with a lot of confidence."

Frenchman Edouard Roger-Vasselin will meet Wawrinka in the final after beating Spaniard Marcel Granollers 6-2 4-6 6-3.