He completed the hat-trick two minutes after that as he cut a swathe through the white defence and laced the ball past the wrong-footed Poom.

BBC: Yorke treble tethers Rams

Five-time champion and world number one Rafael Nadal had seemed the likeliest to derail Djokovic at Roland Garros but Federer has cut a swathe through his section of the draw, with fellow Swiss Stanislas Wawrinka his latest victim.

BBC: French Open: Djokovic and Federer reach last eight

Indeed, we cut such a swathe through Wales that if you wished to do so - and why not, for it is a lovely country - you could walk from the south-east corner to the north-western most point and find yourself on Conservative territory all the way.

BBC: Wales politics