Cincinnati: Roger Federer said on Saturday that the back pain that has hindered him recently is under control, and his focus is on defending his title at the Cincinnati Masters.
The Swiss, who celebrated his 32nd birthday on the practice court in the muggy Midwest venue on Thursday, is counting on "passion" to re-ignite his tennis after Wimbledon disappointment followed by injury-plagued weeks on the clay courts in Hamburg and Gstaad.
"My passion is sky high. If the passion doesn't overweigh all the rest, the end is extremely near," said Federer, who won his fifth Cincinnati title in 2012. "You might be doing it for the wrong reasons. But I love what I'm doing."