The fact Roger Federer, left, has opted to skip Paris gives Rafael Nadal a huge opportunity to seal the No 1 spot. Lintao Zhang / Getty Images
The fact Roger Federer, left, has opted to skip Paris gives Rafael Nadal a huge opportunity to seal the No 1 spot. Lintao Zhang / Getty Images

Nadal set to seal year-end No 1 spot after Federer pulls out of Paris Masters