Defending champion Luke Donald and Ireland's Peter Lawrie were the new leaders at the BMW PGA Championship as the third round developed at Wentworth Club.
The pair reached ten under par, two ahead of Justin Rose, as overnight leader James Morrison struggled.
The 27 year old began the day with a four stroke lead after the former England Youth cricketer - he played with Alastair Cook and Tim Bresnan - had gone round in a sparkling 64 to take charge of The European Tour's flagship event.
But on his return the World Number 236 had two eights and two bogeys in the first eight holes and by the turn was seven strokes behind.
Morrison bogeyed the first after hitting his second into sand and then found all manner of trouble on the long fourth.
It is rated the easiest hole on the course, but proved anything but for Morrison. In the right rough off the tee he hooked out of bounds, hit his fourth shot back into the trees, duffed a chip and by taking three more fell one behind.
He could not get up and down from another bunker at the next, then had a quadruple bogey on the eighth. There he was in the trees for one and in water for three.
Playing partner David Drysdale was suffering almost as much. He put two balls in the drink at the eighth and also took eight, bogeyed the next, double-bogeyed the short tenth and dropped another shot on the 11th to be only one under.
Donald, needing a top eight finish to go back to World Number One after Rory McIlroy's second successive missed cut, was also bunkered on the first, but saved par from 12 feet.
He was then on in two at the fourth and two-putted for birdie, then rattled off seven pars in a row before picking up another shot at the long 12th.
Former Open de España champion Lawrie, playing alongside him, birdied the fourth, eighth and tenth.
The best early score was a 69 from Ian Poulter that took him to three under, while Lee Westwood had a 70 for one under that included six birdies, but also a 30 foot putt for a triple bogey seven on the 13th, where he twice left shots in a fairway bunker and had a penalty drop in between.