The Swiss Maestro has been in superb form at the All England Club, cruising through the first five matches without dropping a set.
Federer believes the key ingredient to his latest run is simple: Confidence.
“I’m rested. I’m fresh. I’m confident, too. Then great things do happen. Confidence is a huge thing,” quipped the veteran in his press conference.
“Last year I had a hard, hard time practising through the clay-court season. The grass-court season was difficult because of the back issues I had and the knee issues.
“This year I’m just a normal tennis player again where I can focus on tactics. I think that’s the difference. I’m playing very well.”
Federer will face old rival Tomas Berdych in the semi-finals, an opponent he has had the measure of in the recent past. While the former world number one leads their head-to-head 18-6 and is on a seven-win streak against the Czech, he cannot afford to be complacent.
Berdych dished up a serving masterclass in his fourth round clash against Dominic Thiem, firing 15 aces and winning 83% of points on his first serve. Berdych may also draw strength from his 2010 meeting with Federer at Wimbledon, where he beat him in four sets.