Switzerland's Roger Federer.

 Roger Federer admitted Friday that he may skip next week's Paris Masters to concentrate on the season-ending World Tour Finals in London.

The world number two, who will have a bye in the first round at Paris Bercy, said he will make a decision on his appearance in the French capital after the ongoing tournament in Basel where he made the semi-finals on Friday.

"I'll decide when it's over this weekend what to do with Paris," said the 36-year-old Federer after defeating Frenchman Adrian Mannarino 4-6, 6-1, 6-3.

"I'm hoping to play there, but there's also a good possibility that I won't. It depends on how I feel.

"We'll see what happens, health is always more important at this stage of my career."

Source: AFP