Roger Federer "glad" to maintain Cincinnati Open title chance

Roger Federer has said that he is "glad" to have reached the semi-finals of the Cincinnati Open on Friday.

The Swiss defeated Mardy Fish in straight sets 6-3, 7-6 (4) in the last eight to maintain his chances of a fifth ATP and WTA Cincinnati Masters title.

It was Federer's sixth quarter-final appearance in seven years in the competition, and he was overjoyed to have reached the last four.

"I played really well," the 31-year-old said after his victory. "The second set was very competitive, but I was able to maintain a high level for a long time.

"I'm very pleased with the form and glad to reach the semis."

Federer will now take on Swiss compatriot Stanislas Wawrinka for a place in the final.