Roger Federer barely needed an hour on the court to ease past Frenchman Adrian Mannarino 6-4, 6-2 to reach the second-round of the Swiss Indoors tournament in Basel, Switzerland.
The five-time winner of the event has been the subject of rampant speculation he could retire at the end of the current season due to a horrid campaign on the mens tour this year.
But in the wake of his uncertain long-term plans, Federer produced a performance of relatively familiar efficiency to book his place in the next stage of the competition.
Despite his victory, the 17-time Grand Slam champion displayed an element of rustiness throughout the match; needing 13 chances to break Mannarino's serve on four occasions.
The last time the pair met was in the third round of this year's US Open, where the 32-year-old steam-rolled to a convincing 6-3, 6-0, 6-2 triumph.
World number seven Federer, who is committed to qualifying for the eight-man ATP World Tour Finals tournament in London next month, is closely pursued by Richard Gasquet and Jo-Wilfried Tsonga in the world rankings.
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