PARIS (AFP) - Lucas Pouille climbed into the top 20 of the ATP Tour on the back of his weekend success in Vienna as Rafael Nadal closed in on the end of year No. 1 spot.

Pouille was the biggest mover in the latest rankings released on Monday (Oct 30) with the Frenchman up seven places into 18th after his 6-1, 6-4 defeat of compatriot Jo-Wilfried Tsonga in Sunday's (Oct 29) final in Austria.

Nadal heads an unchanged top three from Roger Federer and Andy Murray.

Federer won his eighth Swiss Indoors title in Basel on Sunday and then announced he would skip this week's Paris Masters to prepare for the end of season World Tour Finals in London.

The Swiss legend's absence from Paris means Nadal can guarantee the year-end No. 1 ranking by winning his opening second-round match in Paris.

The Spaniard will open his campaign at the Bercy arena against either Germany's Mischa Zverev or the promising South Korean Chung Hyeon.