Federer has been brandishing an aggressive style of play, forcing the action and rushing in to half-volley weak second serves to forge an advantage.
World number one Rafael Nadal set a new record of winning 50 consecutive sets on a single surface by beating Argentine Diego Schwartzman 6-3, 6-4 on Thursday to reach the Madrid Open quarter-finals.
World No 1 Novak Djokovic and fourth-seeded Andy Murray each had to contend with different degrees of adversity before they advanced.
A summary of sports events and sports persons, who made news on Thursday.
Third seed Stan Wawrinka was sent packing in the round of 16 at the BNP Paribas Open in California on Wednesday and was very nearly joined by Rafael Nadal, who pulled off a Houdini-like escape to reach the last eight.
Big-serving Milos Raonic fought back from a set down to upset Rafa Nadal 4-6, 7-6(10), 7-5 in a pulsating quarter-final at the BNP Paribas Open on Friday.
Top seed Serena Williams made short work of Kazakhstan's Zarina Diyas in the third round of the BNP Paribas Open.
Thursday's match was just Venus Williams's seventh of the year and first since January's Australian Open, where she fell to Simona Halep in the round of 32.
Summary of sports events and persons who made news on Saturday
Photos from matches played at the US Open in Flushing Meadows on Sunday
A summary of sports events and sports persons, who made news on Sunday
Novak Djokovic maintained his unbeaten record against Frenchman Gael Monfils with a 6-3, 6-2 win in the semi-finals of the Rogers Cup in Toronto on Saturday, while Japan's Kei Nishikori also reached the final after beating Swiss second seed Stan Wawrinka.
Roger Federer has now won all the seven finals he has contested in Cincinnati. Rediff.com takes a look at a few other events that have ensured prolific returns for the Swiss master.
A summary of sports events and persons who made news on Friday
The lanky wild card kissed the Montreal court after completing a rousing 3-6, 6-4, 7-6(4) triumph as the 18-year-old became the youngest player to ever reach the quarter-finals of an ATP Masters 1000 event.
In-form Victoria Azarenka battled past an ailing but determined second seed Angelique Kerber to set up a Miami Open final showdown against Svetlana Kuznetsova with a 6-2, 7-5 victory on Thursday.
Second seed Angelique Kerber stayed on track in her quest to unseat Serena Williams as world number one by beating Mirjana Lucic-Baroni of Croatia 6-2, 7-6(7) on Wednesday to reach the third round of the US Open.
There comes a moment in all great sporting careers when the puzzle fits together and for Kei Nishikori it arrived on a sweltering early September afternoon in New York.
Roger Federer's straight sets victory over Richard Gasquet in the Davis Cup final against France on Sunday not only made Switzerland only the 14th nation to win tennis's prestigious trophy, but also completed the final piece in the Swiss's puzzle.