Roger Federer beats Juan Martin del Potro in Rotterdam final

World number three Roger Federer swept aside Juan Martin del Potro in an hour and a half to win the World Tennis Tournament in Rotterdam.

The Swiss repeated last month's Australian Open quarter-final win over Del Potro with a 6-1 6-4 victory.

Federer, 30, stormed into a 5-0 lead as he dominated the opening set.

Continue reading the main story

It's incredible that it took me seven years to come back and defend my title

Roger Federer

And he got the crucial break in the second when he brought the Argentine to the net before firing a forehand past him to break for 3-2.

Federer's second Rotterdam title, and his 71st on the ATP Tour, takes his head-to-head record against Del Potro to 9-2.

It also maintains the 16-time Grand Slam champion's fine indoor form from 2011, which he ended with wins in Basel, Paris and London.

"Even if I had a good indoor season last year, this is a great start," he said. "It's incredible that it took me seven years to come back and defend my title, I hope the next time is not so long. But if it is, then it means I'll be playing for another seven years."

Federer has now assured himself of a 12th consecutive year in which he has won at least one ATP title.

Del Potro admitted: "He played much better than me today. I didn't take the break points when I had them.

"It's really difficult to beat Federer if you have the chances and don't take them. He was more confident and concentrated than me in the important moments and I think that was the key."