Istanbul - World No 2 Roger Federer on Wednesday eased past fellow 33-year old, the Finn Jarkko Nieminen, with a dominant display to reach the quarter-finals of the Istanbul Open.
Federer, showing flashes of brilliance mixed with occasional errors, closed out in just over an hour to win the second round match 6-2 7-5.
The 17-time Grand Slam winner was making his first appearance in Turkey at the Istanbul Open, the first ever ATP world tour event in the country.
Federer, who is seeded to meet world number 11 Grigor Dimitrov of Bulgaria in the final, is hoping to use the clay court event to fine tune his bid for a second French Open title next month.
He is looking for confidence on the slower clay, after a long hard court season, having lost in the third round on clay to Gael Monfils at the Monte Carlo Masters this month.
Federer raced through the first set in just 20 minutes, pulling out his full armoury of drop shots, cross court forehands and backhand winners against a clearly hesitant Nieminen, the world 71.
A stunning drop shot from Federer that fell dead inside the service court broke Nieminen's serve in the fifth game and left the crowd gasping.
The crowd, who had braved heavy evening traffic to catch Federer play at the 8,000 capacity Garanti Koza arena on the outskirts of Istanbul, began to get behind the Finn to prolong the game.
Nieminen showed greater confidence in the second set, holding his serve with ease and an over-relaxed Federer spraying the ball wide regularly.
The Federer forehand was responsible for a string of unforced errors, allowing Nieminen to hold serve without trouble.
But Federer, serving and volleying on occasion and delivering nine aces in the match, found his top gear at the close of the set.
Piling pressure on the Nieminen second serve and using his trademark drive volley to great effect, Federer finally broke Nieminen to lead 6-5.
He then served out to love, finishing with a stunning backhand cross court that left Nieminen with arms and legs akimbo.
In Friday's quarter finals, Federer will face Daniel Gimeno-Traver of Spain who overcame Kazakhstan's Mikhail Kukushkin in straight sets
Dimitrov meanwhile is due to start his campaign against Andrey Golubev of Kazakhstan on Thursday.
Fourth seed Santiago Giraldo of Colombia went through to the quarters with a tough 6-4, 1-6, 6-3 win against Andrey Rublev of Russia.
Results from ATP Istanbul Open on Wednesday (x denotes seeded player):
Roger Federer (SUI x1) bt Jarkko Nieminen (FIN) 6-2, 7-5
Santiago Giraldo (COL) bt Andrey Rublev (RUS) 6-4, 1-6, 6-3
Daniel Gimeno (ESP) bt Mikhail Kukushkin (KAZ x6) 6-3, 6-3
Diego Schwartzman (ARG x8) bt Jurgen Melzer (AUT) 6-0, 6-2