Miami - Roger Federer is feeling the natural frustration of a tennis hero whose last title came just shy of six months ago.
The usually solid Swiss smashed his racket at a moment of third-set tension as he went down to a 3-6, 6-2, 6-3 semi-final loss to Novak Djokovic at the Miami Masters. He last lifted a trophy at his home Swiss Open in Basel on October 20.
Federer, who lost his Australian Open trophy to Rafael Nadal this season, is feeling his former dominance slip.