Roger Federer booked his place in the quarter-finals of the Paris Masters after a straights sets win over Phillip Kohlschreiber.
The former long-time World No 1 set up a last eight clash with Juan Martin Del Potro after beating the unseeded Kohlschreiber 6-3 6-4.
Federer, who had never lost to his rival in seven previous meetings, looked fairly comfortable throughout and allowed the German to make mistakes on the big points.
Kohlschreiber had three break points on the Federer serve but couldn't convert any while the Swiss ace took two of his four chances.
Fifth-seed Federer, who booked his spot at the World Tour Finals in London next month with a nervy win over Kevin Anderson in the previous round, landed 75% of his first serves and and hit 24 winners en route to victory.
At 4-4 in the second set, it still looked as if Kohlschreiber could be a threat but the German missed an easy forehand approach to gift Federer the break and the 17-time Grand Slam winner held serve to complete victory in one hour and three minutes.
Del Potro wins again
Federer's quarter-final opponent Del Potro maintained his winning run with a 3-6, 6-3, 6-4 victory over Grigor Dimitrov.
The Argentine claimed his 50th win of the season as he secured his 15th victory in his past 16 matches.
Fourth-seed Del Potro has captured titles in Tokyo and Basel and finished runner-up in Shanghai in the weeks leading into Paris but is looking to make the last four for the first time in this tournament.