PARIS, Nov 4 (Reuters) John Isner pushed on towards an ATP Tour finals spot when he reached the semi-finals of the Paris Masters with a 6-4 6-7(5) 6-4 win over Argentine Juan Martin del Potro on Friday as the tournament dealt with the withdrawal of Rafa Nadal.
The American, last year's runner-up, needs to win the tournament if he is to clinch the final berth in the season-ending event at the O2 in London from Nov. 12-19.
Del Potro would have claimed it if he had won, but the ninth seeded Isner was more consistent and set up a meeting with Serbian qualifier Filip Krajinovic, who advanced after world number one Nadal pulled out.