Roger Federer of Switzerland holds the trophy after defeating Mardy Fish during the finals on Day 7 of the Western & Southern Financial Group Masters at the Lindner Family Tennis Center in Cincinnati, Ohio. [Xinhua/Reuters Photo]

World number two Roger Federer won Cincinnati Masters title on Sunday by beating American Mardy Fish 6-7 (5), 7-6 (1), 6-4.

It's Federer's fourth Cincinnati crown after 2005, 2007 and 2009.

"I have been playing well the last couple of weeks and today was just another proof that I'm playing really well," said the Swiss.

Federer captured his first title since the Australian Open and he took it as a warm-up competition for the US Open which kicks off on August 30.Federer lost last year's US Open final to Juan Martin del Potro, who will not defend his title because of an injury.

"It's nice knowing the hard work in the off-season after Wimbledon pays off right away," Federer said. "I've been committed to this sport for many years and when you do that and give yourself over and over again, you will break through by winning tournaments again.

"I was maybe playing a little bit too passive. Now I'm taking it to the opponents again. I'm hoping that that's the right game plan right now." He said.

Wildcard entrant Fish, who had won recent titles in Newport and Atlanta, fired 17 aces but failed in his bid to become the first unseeded champion in the event.

"I played well. He played well. It was a pretty high level for the most part," Fish said. "In two matches he has broken me only one time in five sets, so I have played really well against him the past couple of times."