Michael Campbell makes his way to the eighth green as he plays against Colin Montgomerie in Friday's quarter-finals

Montgomerie plays himself out of trouble on the 17th and finishes the first 18 holes all square with Campbell

Montgomerie goes on to final-hole win over defending champion Campbell and faces Paul Casey in the semi-finals

Casey takes his second shot on the first hole as he starts his match against Mike Weir in the last eight

Casey keeps English hopes alive at Wentworth with a comprehensive 5&3 victory over the left-handed Weir

Sweden's Robert Karlsson looks to continue his impressive form from Thursday in his match against Angel Cabrera

Cabrera takes a chunk out of the 13th fairway but finishes the first 18 one down against his Swedish opponent

Argentina's Cabrera can't find an answer to Karlsson's form and succumbs to a 4&3 defeat at the hands of the Swede

England's Luke Donald enjoys the support of the crowd at Wentworth as he takes on Shaun Micheel

But Micheel continues the form that saw him beat Tiger Woods and takes a five-hole lead over Donald by lunch

Donald and Micheel shake hands after the American seals an impressive 4&2 win to set up a semi-final against Karlsson